A young woman mysteriously drowns in Lake Lucinda. She's not the first to die there and she might not be the last.

FBI Agent Victoria Heslin visits her family's secluded lake house to recuperate from a plane crash. But her peaceful recovery time turns into a murder investigation when she discovers the body of an unidentified young woman in the lake.

Only a few others live in the exclusive Lake Lucinda community and all of them are suspects, including Victoria's brother. Which of them knows more than they are saying? How many of them are lying? Who is guilty? As Victoria's personal investigation unfolds, she learns they all have secrets to hide.

Will Victoria uncover the dark mysteries of Lake Lucinda before more lives are lost? And will doing so destroy what's left of her family?

Fans of James Patterson, Megan Miranda, and Agatha Christie will love this mystery by USA Today bestselling author Jenifer Ruff. Ripple of Doubt is book 4 in the award-winning Agent Victoria Heslin Thriller Series. It can be read as a standalone.

Early Praise for Ripple of Doubt:

"This book is an excellent addition to a superlative series. It offers the reader a full package - suspense, tension, drama, murder, and a touch of romance." - Txdoc Review

"Another great read from Jenifer Ruff. Had me intrigued and hooked all the way through. So many twists, turns, and surprises!" - Munchkin Review

"An intense mystery with suspects everywhere. This who-done-it will keep you guessing to the last thrilling page!" - Dan Alatorre, USA Today Bestselling Author, Primary Target

"Another excellent Agent Heslin thriller! FBI Agent Victoria Heslin is vacationing with her family when a young woman turns up dead. Heslin becomes personally involved in the investigation when her brother is identified as a suspect. The book will keep the reader guessing until the end - everyone seems to have a motive, no one seems to have a good alibi, and whoever did it may not be finished killing. Great read!!" - C. Studham Review

"Once you start the Agent Victoria Heslin Series, you won't want to do anything else! Jenifer Ruff blends lively characters with mind-bending plots to create the perfect thrillers you can't put down." - USA Today Bestselling Author, Audrey J. Cole.