Holly Cassidy is the pen name for internationally bestselling author Hannah Mary McKinnon. Her suspense novels include The Neighbors, Her Secret Son, Sister Dear, You Will Remember Me, Never Coming Home, The Revenge List, and Only One Survives (coming July 2024). McKinnon was born in England, grew up in Switzerland, and now lives in Ontario, Canada with her husband and three sons. The Christmas Wager was her first novel writing as Holly Cassidy.
