Alison is 19 when she disappears while vacationing with her family on the Caribbean island of Saint X. Her body was found the day they’re meant to travel home. Two local men are arrested but later released due to lack of evidence.
Alison’s younger sister Claire is only 7 years old when this happens. As an adult, Claire is living and working in NYC when she’s unexpectedly faced with one of the men suspected of her sister’s murder. She becomes fixated on him, and delves back into the still unsolved mystery of her sister’s death. The sister she never really got to know.
The story follows multiple points of view in timelines before and after Alison’s death, a pivotal point in many lives. The characters were all very well written, each with a unique voice. The ending was completely unexpected and in my opinion, perfect.