Unforgotten

As we enter the fall season, get updates on Miss Scarlet and the Duke and Unforgotten, while catching some sneak peeks at the upcoming Guilt and Grantchester.

The team continues investigating the death of Matthew Walsh in the wake of tragedy, narrowing in on their suspect as everyone's life is thrown into crisis.

Cassie finally begins to heed the warning and advice of her loved ones as increasing evidence allows her and Sunny to pressure some of their suspects into revealing the truth about the night Matthew Walsh disappeared.

As Cassie and Sunny's team begins to look into their suspects, difficult pasts begin to emerge, while a prime witness from the night of Walsh's disappearance is located. 

Cassie and Sunny begin interviewing four possible subjects in a decades-old case while also trying to confirm that it was in fact a murder, via witnesses and tracking down the rest of the victim. 

Ram faces a serious complaint at work and a possible medical crisis at home, but he will soon have even more to worry about, as Cassie and Sunny begin to identify the four new police officers who may have been witnesses to a murder decades ago.

A frozen body without a head or hands appears in a scrapyard, its only identifying feature a bicep tattoo. Sunny and the team try to learn its identity while Cassie fights the police department to win a medical retirement, without luck.

Cassie and Sunny try to find evidence to conclusively prove their suspect is Hayley Reid's murderer, and discover a dark, large history that is more than they reckoned with, causing Cassie to question her career.

As new stories and backgrounds emerge around the Hayley Reid case, suspicion begins to shift from the initial promising subjects. A mistake leads to a disastrous consequence and a devastating feeling of guilt for Cassie. But the investigation narrows in on the culprit.

Media attention around the re-opening of the Hayley Reid case becomes unbearable and even dangerous. Cassie and Sunny hear allegations of darkness in the pasts of some of their prime suspects, four schoolmates who seem to have lied to the detectives. 

Cassie and Sunny interview four schoolmates who rented a cabin in Hayley's town the night she disappeared and begin to learn more about their pasts and their lives, while a former suspect refuses to speak to the detectives. 

Cassie and Sunny are briefed on the original investigation into Hayley's disappearance as the media descends on Middenham. A friend of Hayley's comes forward with some some information she never shared that leads the detectives to four old friends. 

Sunny and Cassie work to identify a skeleton discovered off the side of an isolated British roadway, slowly narrowing down a time window for who the victim might be. 

The prime suspects in the murder of David Walker seem to have watertight alibis despite the possibility of motives, but Cassie eventually has a breakthrough and an investigation of childhoods leads to an answer. Recap the finale of this season of Unforgotten.

Cassie and Sunny begin to uncover traumas and transgressions in the pasts of nearly everyone connected with their cold case, including the victim. David Walker had a dark life, and a new revelation against him soon transforms the entire investigation.