Hawkins, author of the sensational Girl on a Train, is back with this atmospheric thriller. A single mother drowns in a river by her house, under mysterious circumstances. Her work involved documenting the deaths of troublesome women in this same river and drowning pool. Her estranged sister comes to town to deal with the aftermath and become the guardian of her teenage daughter, who is mourning not only her mother, but also her friend who committed suicide in the same river earlier in the summer. It seems that every one in this little village, where our heroine and her sister spent summers in their youth, has a secret. Lots of satisfying twists.