The Girl on the Train

The novel follows Rachel Watson, a 33-year-old alcoholic who is reeling from the end of her marriage.

She commutes to London daily and fantasizes about a perfect couple she sees, whom she names 'Jess and Jason'.

However, when the woman she calls 'Jess' (actually Megan) goes missing, Rachel becomes deeply involved in the investigation, revealing a complex web of relationships, betrayals, and dark secrets.

The story is told through the perspectives of three women: Rachel, Megan, and Anna, Tom's new wife, each with their own struggles and unreliable narratives.