Picked by The Investigation Duo fans

Here are 9 books that The Investigation Duo fans have personally recommended once you finish the The Investigation Duo series. Book DNA is a community of authors and super-readers sharing their favorite books with the world.

Book cover of The Summer of Moonlight Secrets

Andrea Hintz Author Of Perception and Deception

From my list on when you need mystery and adventure in your life.

Why am I passionate about this?

I’m an author of spy and treasure-hunting books! As a Christian, I’m always looking for mysteries and adventures of all kinds that leave my heart pounding, but the story itself contains high morals and justice. I love a dash of mystery, a cup of comedy, a sprinkle of romance, and a dollop of drama. These are some of my favorite picks. They’re all incredibly different too, so if you like variety, this is the list to be visiting. The order was automatically randomized—they’re all fantastic! The authors all have true hearts of gold, so definitely go out and support their amazing work today! God bless! 

Andrea's book list on when you need mystery and adventure in your life

Andrea Hintz Why Andrea loves this book

This book mixes realistic elements with fantasy. These YA characters are incredibly intriguing and there's always a sense of mysteriousness as you read it. This book teaches about friendship and investigating the unknown. It felt truly magical, as the main character, Allie Jo Jackson, and her friend, explore a mystical event that happened at The Meriwether Hotel. 

By Danette Haworth ,

Why should I read it?

1 author picked The Summer of Moonlight Secrets as one of their favorite books, and they share why you should read it. This book is for kids age 8, 9, 10, and 11.

What is this book about?

At The Meriwether, Florida's famous antebellum hotel off of Hope Springs, nothing is quite as it seems. Secret staircases give way to servants' quarters and Prohibition-era speakeasies make for the perfect hide-and-seek spot. Allie Jo Jackson knows every nook and cranny of The Meriwether-she's lived there her whole life-and nothing surprises her, until the first time she spots the enigmatic and beautiful Tara emerging from the springs. Tara's shimmery skin, long flowing hair, and strange penchant for late moonlight swims disguise a mysterious secret-and once Allie Jo and her friend Chase discover Tara's secret, nothing will ever be the same.…


Book cover of The Lost Boy Episode 1: Pan

Andrea Hintz Author Of Perception and Deception

From my list on when you need mystery and adventure in your life.

Why am I passionate about this?

I’m an author of spy and treasure-hunting books! As a Christian, I’m always looking for mysteries and adventures of all kinds that leave my heart pounding, but the story itself contains high morals and justice. I love a dash of mystery, a cup of comedy, a sprinkle of romance, and a dollop of drama. These are some of my favorite picks. They’re all incredibly different too, so if you like variety, this is the list to be visiting. The order was automatically randomized—they’re all fantastic! The authors all have true hearts of gold, so definitely go out and support their amazing work today! God bless! 

Andrea's book list on when you need mystery and adventure in your life

Andrea Hintz Why Andrea loves this book

I'm recommending this superhero adventure comic because I'm a fan of justice and great friendships between characters. This story really has a lot of heart and I feel like I know the characters personally. It will teach you about believing in yourself and facing intimidating challenges head on. I felt intrigued and left with a sense of adventure. 

By Joshua Grant , Marc Rosete (illustrator) ,

Why should I read it?

1 author picked The Lost Boy Episode 1 as one of their favorite books, and they share why you should read it.

What is this book about?

After the murder of his best friend, Peter Barrie seeks revenge against the head of a criminal empire, none other than Los Angeles' mayor J.M. Hook. See the exciting, gritty, and realistic retelling of J.M. Barrie's classic story that asks the question, 'what if Peter Pan became a vigilante superhero, and will he be able to sacrifice innocence for revenge?' Fans of beloved vigilante series like The Dark Knight and Daredevil will be right at home in this shadowy beat-em-up thriller!


Book cover of Adventurous Love

Andrea Hintz Author Of Perception and Deception

From my list on when you need mystery and adventure in your life.

Why am I passionate about this?

I’m an author of spy and treasure-hunting books! As a Christian, I’m always looking for mysteries and adventures of all kinds that leave my heart pounding, but the story itself contains high morals and justice. I love a dash of mystery, a cup of comedy, a sprinkle of romance, and a dollop of drama. These are some of my favorite picks. They’re all incredibly different too, so if you like variety, this is the list to be visiting. The order was automatically randomized—they’re all fantastic! The authors all have true hearts of gold, so definitely go out and support their amazing work today! God bless! 

Andrea's book list on when you need mystery and adventure in your life

Andrea Hintz Why Andrea loves this book

This is a book I would recommend because it's filled with love and hope. I'm a real fan of books that make you feel good by describing great relationships of all kinds. I especially enjoyed the relationship between the two sisters. The story truly teaches about great romance. When a person is having a bad day, this book will suck you in and leave you with a feeling of happiness. 

By Jacquelyn Wiles ,

Why should I read it?

1 author picked Adventurous Love as one of their favorite books, and they share why you should read it.

What is this book about?

Have you ever met your match? Found the one who changed everything? This love was burning from the start. Every book sold half the proceeds will be donated to charity.


Book cover of Asbury High and the Thief's Gamble

Andrea Hintz Author Of Perception and Deception

From my list on when you need mystery and adventure in your life.

Why am I passionate about this?

I’m an author of spy and treasure-hunting books! As a Christian, I’m always looking for mysteries and adventures of all kinds that leave my heart pounding, but the story itself contains high morals and justice. I love a dash of mystery, a cup of comedy, a sprinkle of romance, and a dollop of drama. These are some of my favorite picks. They’re all incredibly different too, so if you like variety, this is the list to be visiting. The order was automatically randomized—they’re all fantastic! The authors all have true hearts of gold, so definitely go out and support their amazing work today! God bless! 

Andrea's book list on when you need mystery and adventure in your life

Andrea Hintz Why Andrea loves this book

I am recommending this book because it’s one of those classic mysteries with a group of brave teens who grow and solve cases with each passing book. The world-building is so well done and the characters are realistic. I love this book because of the great relationships between the characters. It taught me about friendship and loyalty! This series helped me learn how to jump into problem-solving mode. If something is wrong, don’t hold back. Get out there and fix it!

By Kelly Brady Channick , Susan Schafer (illustrator) ,

Why should I read it?

1 author picked Asbury High and the Thief's Gamble as one of their favorite books, and they share why you should read it. This book is for kids age 12, 13, 14, and 15.

What is this book about?

NEW EDITION!

Can four teens solve a puzzling whodunit that captivates their small town and baffles the police?
 
"Asbury High is a quick paced, Scooby-Doo-esque story that features a strong storyline and even stronger bonds of friendship. [It] is a mystery that will appeal to anyone that enjoys a light and fun sleuth story featuring a group of likable young amateur detectives." (Indies Today, ★★★★★)

Available in paperback!
Take one spunky valedictorian, one clever billionaire athlete, one gossipy in-the-know cheerleader and one technological genius, and throw a string of burglaries into their usually quiet, coastal hometown and what do you…


Book cover of Parallel

Tonya Penrose Author Of Venetian Rhapsody

From my list on featuring a time-travel romance or relationship.

Why am I passionate about this?

I've been fascinated with time travel since I was young, and that's been a few moons. When the idea came to write books that play with time and space and cloak them in a romantic comedy, I got in my favorite writing chair to see who showed up with a story. I want to entice readers to take the journey, pondering suppose we could time travel? I think time is malleable, at least in my characters' hands. And they've done an excellent job of keeping me intrigued with their escapades in the past and present. I hope you enjoy the books I chose to recommend as much as I did. 

Tonya's book list on featuring a time-travel romance or relationship

Tonya Penrose Why Tonya loves this book

A dream-activated time travel story. Now that's one I couldn't resist and fortunately, I didn't.

The reader follows the character, Quinn, on a journey as her dreams bring a man that stirs her like no other. Problem? Nick enters her real world, too. They have a history. Complications? Oh, he's dreaming about her, too.

Can they figure out a way to stay connected and understand what's happening? Let’s hope.

Warning: it's a series, but after reading the first book, you'll be glad there's more from this talented author. 

Book cover of Your Soul's Gift: The Healing Power of the Life You Planned Before You Were Born

Liane Carmen Author Of When Wings Flutter

From my list on more behind the scenes in our lives than we realize.

Why am I passionate about this?

From my term paper in 11th grade on Life After Death, I’ve always been fascinated with what happens when we pass away, reincarnation, and all things unexplained. After I lost a few important people in my life, I was more compelled than ever to find answers. A trip to a medium, who mentioned the challenges we’re meant to learn and the fact that we reincarnate with the same “soul family,” sent me off to the races reading every book I could find on the topic. What I uncovered left me wanting to tell a story of my own that would leave people wondering if there’s more than we realize—before, during, and after this life.

Liane's book list on more behind the scenes in our lives than we realize

Liane Carmen Why Liane loves this book

From my eleventh-grade term paper about life after death, I’ve always been fascinated with the idea of reincarnation.

This extremely insightful book only fueled that interest. It explores the idea that our souls pre-plan the challenges in each lifetime with purpose.

This book made me look at the struggles I’ve experienced much differently. Now the question I always ask myself is, “What was I supposed to learn from that?”

By Robert Schwartz ,

Why should I read it?

2 authors picked Your Soul's Gift as one of their favorite books, and they share why you should read it.

What is this book about?

In his groundbreaking first book, Your Soul's Plan: Discovering the Real Meaning of the Life You Planned Before You Were Born, Robert Schwartz brought the idea of pre-birth planning into the mainstream. Now, his compelling sequel delves even deeper. With detailed discussion and the deeply personal stories of his interviewees, Schwartz offers an incredible guide map to the soul and encourages his readers to heal at a profound level. Through complex ideas such as the development of greater self-love, an emergence from victim consciousness, and understanding the qualities you came into this lifetime to cultivate and express, Schwartz bestows practical…


Book cover of Golden Girl

Robin Jay Author Of Sunny’s Secrets

From my list on life (and death!) with an element of fantasy.

Why am I passionate about this?

When I finally accepted that I’m analytical, it was surprisingly liberating. I think that’s why I enjoy trying to figure out a story and its characters and what will happen next. Because of this, it’s delightful when a story genuinely surprises me. I especially appreciate magical elements that defy reality. I’m also a motivational speaker and filmmaker, two powerful story-telling mediums, so I love books that inspire me in some way, challenge my perspectives, and leave me thinking about them for days. When a book is so well written that I can turn off my brain and lose myself in the story, it’s a fabulous escape for me. 

Robin's book list on life (and death!) with an element of fantasy

Robin Jay Why Robin loves this book

Ever since my mother passed away on her favorite holiday, Thanksgiving, I’ve been obsessed with how much control we might actually have in life and beyond. So, Golden Girl’s story of Vivian getting to watch her children and even make some changes after her passing was right up my alley!

I found myself identifying with her as she watched, worried, and decided when and how to alter the course of events. And who doesn’t have a few secrets they want to keep hidden? I saw what happened to my family after losing my mother and wondered what mom would say or do differently if she could have seen us and manipulated events from beyond!

By Elin Hilderbrand ,

Why should I read it?

3 authors picked Golden Girl as one of their favorite books, and they share why you should read it.

What is this book about?

In this #1 bestselling page-turner from "the queen of beach reads" (New York Magazine), a Nantucket novelist has one final summer to protect her secrets while her loved ones on earth learn to live without their golden girl.

On a perfect June day, Vivian Howe, author of thirteen beach novels and mother of three nearly grown children, is killed in a hit-and-run car accident while jogging near her home on Nantucket. She ascends to the Beyond where she's assigned to a Person named Martha, who allows Vivi to watch what happens below for one last summer. Vivi also is granted…


Book cover of The Five People You Meet in Heaven

Donna Norman-Carbone Author Of All That Is Sacred

From my list on soulful connections.

Why am I passionate about this?

As someone who has experienced a lot of loss in my life, I’ve done a good amount of research and exploration into the soulful nature in all of us (the living and the dead) through reading nonfiction (Laura Lynn Jackson, Brian Weiss, Edgar Cayce, Jane Roberts, John Edward and Suzane Northrop among them) and fiction that deals with strong soulful connections. Through my own work as an author, I seek to provide the message love, in any form, transcends life and death. We only have to be open to the possibility to know it and experience it. Nothing is a coincidence and we are all connected. I hope these selections open you to the possibility.

Donna's book list on soulful connections

Donna Norman-Carbone Why Donna loves this book

Mitch Albom creates a heavenly world for the main character, Eddie, who has just ascended from earth after saving someone at the carnival where he worked; thus, meeting his own tragic demise.

What strikes me most in this story are the seemingly irrelevant connections we make in life and how those connections could have a deep and lasting impact. Every single thing we do or say or the people we touch is purposeful here, and drives us, our souls, to seek grace in all that we do.

By Mitch Albom ,

Why should I read it?

8 authors picked The Five People You Meet in Heaven as one of their favorite books, and they share why you should read it.

What is this book about?

A STUNNING 20TH ANNIVERSARY EDITION OF THE MASTER STORYTELLER'S INSPIRATIONAL CLASSIC

To his mind, Eddie has lived an uninspiring life. Now an old man, his job is to fix rides at a seaside amusement park.

On his eighty-third birthday, Eddie's time on earth comes to an end. When a cart falls from the fairground, he rushes to save a little girl's life and tragically dies in the attempt. When Eddie awakens, he learns that the afterlife is not a destination, but a place where your existence is explained to you by five people - some of whom you knew, others…


Book cover of The Midnight Library

Jordan Berk Author Of The Timestream Verdict

From my list on time travel as a therapy in disguise.

Why am I passionate about this?

The beauty of time travel stories is that under the tech, or the supernatural, they can be anything. And for me, they are everything. Paradoxes, puzzles, that oh-so-delicate space-time continuum: an infinite blank canvas for exploring human emotion, psychology, and choices. Just like everyone else, I have regrets, big and small, things that I wish I could change, sliding doors that may have taken me down the wrong fork in the road. With these books, each deeply personal and therapeutic in their own way, you may be able to see your own life choices anew, just like I did. Enjoy!

Jordan's book list on time travel as a therapy in disguise

Jordan Berk Why Jordan loves this book

Friendly tip: I do not recommend reading this novel while isolated from your family due to travel and illness, because this book hits hard in all the right ways.

It invites both the protagonist and the reader to explore the deepest wells of regret and the branching infinities that our life choices produce. In doing so, the novel beautifully confronts the seductive lure of “what could have been” while reminding us of the quiet beauty in what is.

As someone whose mind is often lost in the past or gazing into the future, this ultimate lesson of the book provided a much-needed sense of clarity.

By Matt Haig ,

Why should I read it?

40 authors picked The Midnight Library as one of their favorite books, and they share why you should read it.

What is this book about?

The #1 New York Times bestselling WORLDWIDE phenomenon

Winner of the Goodreads Choice Award for Fiction | A Good Morning America Book Club Pick | Independent (London) Ten Best Books of the Year

"A feel-good book guaranteed to lift your spirits."-The Washington Post

The dazzling reader-favorite about the choices that go into a life well lived, from the acclaimed author of How To Stop Time and The Comfort Book.

Somewhere out beyond the edge of the universe there is a library that contains an infinite number of books, each one the story of another reality. One tells the story of…