Karen Dionne is the USA Today and #1 internationally bestselling author of the award-winning psychological suspense novel The Marsh King's Daughter and The Wicked Sister, both published by G.P. Putnam's Sons in the U.S. and in dozens of other countries. The Marsh King's Daughter movie starring Daisy Ridley and Ben Mendelsohn released by Lionsgate in 2023. Karen enjoys nature photography and lives with her husband on a small lake surrounded by forest in the middle of Michigan.