Suspect

Following on from the first season, grieving psychotherapist Dr Susannah Newman sets out on a quest to find the truth about her daughter Christina's tragic death. When a mysterious new client Jon makes a disturbing confession under hypnosis, Susannah is forced to embark on her own deadly mission to save a life - the way she couldn't do with her own daughter.

Susannah is shocked when DS Richard Groves, her former lover, doesn't seem to take her concerns about Jon's murderous discourses seriously, and soon realises that he's hiding something. She locks horns with Richard and his wife Natasha and manages to get a lead - the name of a police officer who reported a girl saying her friend was murdered. 

Susannah tracks down her ex-client, officer Louisa, who though initially hostile eventually opens up about a witness who saw her friend being killed by a man matching Jon's description. Louisa admits that she was threatened into silence and Susannah realises they might both be in imminent danger. Louisa sends Susannah a photo of the witness who she needs to find. As Susannah hurries away, it's clear that she too could now be a target.

Susannah goes to the secure psychiatric hospital where her ex-husband Danny is being detained, but is shocked to discover that he's no longer there. Suspecting a cover-up by Dr Alistair Underwood, she escapes to a hotel to try and find a key witness. 

Susannah tracks down the witness, an escort called Sapphire. However, she reels when she learns the girl Jon killed was Christina, her daughter, and Sapphire is Jon's next target.

Susannah seeks out ex-client and Royal Marine, Joseph. She and Joseph head down the Thames, looking for Sapphire, but the gunmen catch up with them and Joseph is shot.

Susannah tracks Sapphire's location via her AirPods, but is shocked when she finds her old friend and colleague Kate in possession of them. Susannah soon realises Kate is involved in the conspiracy and knows where Jon has taken Sapphire. 

In a gripping showdown, Susannah finds Sapphire unconscious and comes face to face with her daughter's killer. She is determined to stop him whatever the cost and save her own and Sapphire's lives.