Sarah Greene's life is a mess. She's the low-paid assistant to a tyrannical toy company executive; she can barely pay her rent; her social life sucks, and she's worried sick about her cancer-stricken mother.Her life changes when a drop-dead handsome stranger seduces her on a train. Completely out of character, Sarah surrenders herself to him. He turns out to be one of Manhattan's hottest billionaires, Ari Golden. Impossibly attracted to her, Ari makes Sarah his own personal toy with one caveat: he will not play with her in his bedroom or hers. Spending the night with him is off limits. There are secrets looming—dark ones that stand in the way of a real relationship. As Sarah falls deeper in love with her sexy Trainman, she wonders—can she free him from the demons that have damaged him? But when she encounters the ruthless woman from his past who scarred him, her life may become a train wreck. Is her love for Ari worth dying for?This steamy and suspenseful series is intended for mature readers only.