On The Day Of The Crash, My Husband Saved My Sister Instead

After a car‑crash‑induced traumatic brain injury, graphic‑designer Claire Bennett suffers impaired short‑term memory and self‑care ability. Her husband Ethan pretends to be her devoted caregiver while having an affair with her half‑sister Audrey.

On a seaside trip, he leaves vulnerable Claire alone in a power‑cut apartment. Repeated pleas for help are dismissed, leading to her death, before the hidden truth is exposed.