There are 3 books in the National Parks Mysteries series. The newest book is Forgotten Trail which came out in 2023.

1
Vanishing Edge

Book cover of Vanishing Edge
For fans of Christine Carbo and Scott Graham, an ex-FBI agent is on a desperate hunt for a party of vanished campers while a killer is on the loose.

The rugged landscape of Sequoia National Park is a challenge on the best of days—but when a park ranger discovers an…
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2
An Unforgiving Place

Book cover of An Unforgiving Place
In a remote corner of Alaska, Investigative Services Bureau agent Felicity Harland squares off against a mysterious cult leader with potentially deadly motives in this thrilling outdoor adventure for fans of Scott Graham and Nevada Barr.

While enjoying a rare weekend off from her duties as an agent with the…

3
Forgotten Trail

Forgotten Trail
In this third installment of Claire Kells’s thrilling National Park Mystery series, Investigative Services Branch agent Felicity Harland ventures through volcanic wilderness to investigate a murder at a new hike-in lodge at Pinnacles National Park.

When a guest turns up dead at the newly-opened Pinnacles Grand Hotel, ISB agent Felicity…