Marcella finds herself in a terrifying position when she discovers that Jason is having an affair with , the CFO of the company where he works. After a blackout, Marcella wakes up covered in blood with no memory of her actions. When Grace goes missing and her body is eventually found, Marcella fears she may be the killer. To protect herself, she moves Grace's body to Hampstead Heath and doctors CCTV footage to cover her tracks.
In the first season of , Detective Sergeant Marcella Backland returns to London’s Murder Squad after a 12-year break, just as her husband, Jason, abruptly leaves her. Her return coincides with the resurgence of the "Grove Park Murders," a serial killer case she failed to solve a decade prior. As she dives back into the investigation, her personal life unravels, complicated by a psychiatric disorder known as dissociative fugue , which causes violent blackouts during times of intense stress. The Investigation and the Blackouts Marcella - Sezon 1
The season follows several interweaving storylines involving various suspects: Marcella finds herself in a terrifying position when