Peter Capaldi and Jessica Raine star in this gripping six-part psychological thriller. Lucy wakes every night at exactly 3:33am. Nothing in her life has made sense for a long time. But the answers are out there, somewhere, at the end of a trail of brutal murders.

Lucy investigates a strange connection between her son’s fantasies and her new neighbours, unaware that she is being targeted by a dangerous criminal.

Lucy finds herself at the heart of a police investigation. Her waking nightmares reveal impossible information, leading her and DI Dhillon to make a grim discovery.

Lucy exploits her connection with Dhillon to track down an elusive teenager, worried he is being targeted by their prime suspect.

Following a tragic twist of fate, Dhillon teams up with Lucy to track down the mysterious stranger at the centre of the chaos.

With the suspect in custody, the answers to life’s mysteries are within Lucy’s reach. But will she believe them?