#1 Internationally Bestselling Thriller Author

Karen’s psychological suspense set in Michigan’s Upper Peninsula wilderness has won awards and landed on bestseller lists around the world.

Praise for Karen's novels

“Subtle, brilliant and mature . . . [The Marsh King’s Daughter] is about as good as a thriller can be.” — The New York Times Book Review


“If you only read one thriller this year, make it The Marsh King’s Daughter. It’s sensational.” — Clare Mackintosh, #1 Sunday Times bestselling author


The Wicked Sister is massively thrilling and altogether unputdownable. Dionne is proving to be one of the finest suspense writers working today.” — Karin Slaughter, New York Times and internationally bestselling author

The Marsh King's Daughter is now a major motion picture!

The movie based on Karen’s bestselling novel starring Daisy Ridley and Ben Mendelsohn released November 2023 in theaters in the U.S. and around the world.

“What Karen did with the book is incredible.” – Daisy Ridley, via The Art of Survival: Making The Marsh King’s Daughter DVD bonus content

May Events

In-Person Events

May 29 – June 1 — ThrillerFest, New York City


May 29, 9:30 AM CraftFest workshop: “Breaking in by Finding Your Voice”


May 31, 9 AM panel: GASLIGHTING, INTIMIDATION OR STALKING? Psychological Thrillers with Samantha M. Bailey, Alex Finlay, Robyn Harding, and Kate White


June 1, 8 AM panel: FARMHOUSE, CHALET OR CONDO? Why Setting Matters with Carinn Jade, William Jensen, Vera Kurian, and Tony Wirt



Karen draws heavily on her homesteading adventures in Michigan’s Upper Peninsula to write her wilderness thrillers.

Find out more about how her experiences shaped her writing.

Karen's Book Recommendations

What do these books set in the forest, the swamp, the jungle, and the ocean have in common? They all take place in the wilderness!


Click through to see more of the books that Karen read and loved!