"The author of the #1 New York Times bestseller and global phenomenon The Girl on the Train returns with Into the Water, her addictive new novel of psychological suspense. A single mother turns up dead at the bottom of the river that runs through town. Earlier in the summer, a vulnerable teenage girl met the same fate. They are not the first women lost to these dark waters, but their deaths disturb the river and its history, dredging up secrets long...

Rachel takes the same commuter train every morning, flashing past a stretch of cozy suburban homes, and stopping at the signal that allows her to daily watch the same couple breakfasting on their deck. Their life, as she sees it, is perfect ... until she sees something shocking. It's only a minute until the train moves on, but now everything is changed. Rachel goes to the police, and becomes inextricably entwined in the lives of everyone involved....

Rachel is unemployed and devastated by a recent divorce. She fills her time with drinking, riding the commuter train, and fantasizing about a seemingly perfect couple the train passes by every day. Then one morning, Rachel sees something shocking that unravels her and entangles her in an unfolding mystery