There are 9 books in the Rocky Mountain K-9 Unit series. The newest book is Christmas K-9 Unit Heroes which came out in 2022.

1
Detection Detail

Book cover of Detection Detail
An alleged arsonist. A deadly cover-up.

Can this K-9 sniff out the truth?

Evidence at a fiery car crash leads K-9 officer Nelson Rivers and his accelerant-detection dog, Diesel, to Mia Turner—a woman previously accused of arson. But when a gunman targets Mia during their first meeting, Nelson suspects she…
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2
Ready to Protect

Book cover of Ready to Protect
From USA TODAY bestselling author Valerie Hansen

A K-9 must safeguard a witness

and her baby at all costs

After witnessing a congresswoman’s murder, wildlife photographer and mother-to-be Jamie London is forced into the protective custody of K-9 cop Ben Sawyer and police dog Shadow. Ben’s Wyoming cattle ranch is…

3
Hiding in Montana

Book cover of Hiding in Montana
From USA TODAY bestselling author Laura Scott.

A fugitive at large…

This K-9 is on his trail.

To save a woman from being kidnapped, Officer Chris Fuller and his K-9 partner, Teddy, have no choice but to let the fugitive they’re tracking get away. But when the escaped murderer returns…

4
Undercover Assignment

Book cover of Undercover Assignment
From USA TODAY bestselling author Dana Mentink.

This K-9 will stop at nothing

to keep a child safe

When a little boy is threatened, Officer Daniella Vargas and K-9 partner, Zara, are assigned to pose as his nanny to uncover the culprit’s identity. Suspecting one of the guests in his…

5
Defending from Danger

Book cover of Defending from Danger
This K-9 has a sanctuary to protect
and its owner to rescue

Someone wants Paige Bristow’s wolf sanctuary gone…and Paige dead. Officer Reece Campbell and his K-9 partner, Maverick, are the only ones she can turn to, but she never told him he was the father of her daughter. As…

7
Explosive Revenge

Book cover of Explosive Revenge
A ruthless enemy is out for vengeance…
and it’s up to a K-9 team to stop him

Sergeant Tyson Wilkes is determined to protect his Rocky Mountain K-9 Unit—especially against an unknown assailant with a taste for explosives. Fortunately, Denver detective Skylar Morgan has the toughness and smarts to help…

8
Rescue Mission

Book cover of Rescue Mission
From USA TODAY bestselling author Lynette Eason

A missing baby’s trail has gone cold.
But this K-9 unit has one last lead…

With a baby still missing after months of searching, Rocky Mountain K-9 Unit handler Lucas Hudson and his furry partner must protect the only witness as she recovers…

9
Christmas K-9 Unit Heroes

By Lenora Worth, Katy Lee,

Book cover of Christmas K-9 Unit Heroes: A Holiday Romance Novel
From New York Times bestselling author Lenora Worth…

Danger comes to Denver for the holidays…
in these thrilling Rocky Mountain K-9 Unit novellas.

With veterinarian Sydney Jones being targeted, K-9 Officer Gavin Walker and his furry partner must stand between her and certain death in Lenora Worth’s Hidden Christmas Danger.…