On the day she was abducted, Annie O'Sullivan, a thirty-two-year-old realtor, had three goals―sell a house, forget about a recent argument with her mother, and be on time for dinner with her ever-patient boyfriend. The open house is slow, but when her last visitor pulls up in a van as she's about to leave, Annie thinks it just might be her lucky day after all.

Interwoven with the story of the year Annie spent captive in a remote mountain cabin―which unfolds through sessions with her psychiatrist―is the second narrative recounting the nightmare that follows her escape: her struggle to piece her shattered life back together, the ongoing police investigation into the identity of her captor, and the disturbing sense that things are far from over.