The book looks at the Point of view of three woman. Rachel, the girl on the train who wakes up drunk, with a bump on her head and dose not remember how she got it. Meghan, a woma goes missing without a trace and the double life she lived. Anna, Rachel's ex-husbands wife, who finds it hard to keep Rachel out of her life because she is either sending Tom a hate message or is at her house.
It is a good story and I 'm glad the scenes were not repeated otherwise it would have been boring. The book has it's twist and turns and filled with suspense.