In the first part of two part story Remembrance, which airs on Monday 16 Jan at 9.00pm on BBC, the body of 20 year-old Lorna Katz is discovered drifting near the bottom of the River Lea. Her hands are bound, suggesting she was tied up somewhere before she floated downriver.
However the death takes on an ever-more sinister significance when the team discover that Lorna was the best friend of Ruth Tresize, a teenager who disappeared from the banks of the River Lea three years previously.
When the news of the death ripples through the small East London community, which was already scarred by Ruth’s disappearance, her mother Ali becomes fixated on Nikki for information, convinced that the two incidents are connected.
After trailing Nikki home from work one evening, she lets slip that Lorna had been having a relationship with Aaron, a young outsider who had a history of selling weed to the local teens, before running away to Edinburgh after Ruth disappeared. His erratic behaviour arouses suspicions, but are his actions those of a psychopathic killer or of a man struggling to cope with his grief?
Ali becomes convinced that Aaron killed both Lorna and Ruth and follows his brother Ben to Charing Cross Station. Laden with cash and a ticket, Aaron is planning to board a train to Folkestone. Desperate, Ali catches up with Aaron, and she’s armed with a knife. Will Nikki arrive in time to stop Ali making a mistake?
Emilia Fox is Dr. Nikki Alexander, Richard Lintern is Dr. Thomas Chamberlin, David Caves is Jack Hodgson, Liz Carr is Clarissa Mullery.
Remembrance was written by Graham Mitchell.
Silent Witness: Remembrance Part 1 – Episode 5 (of 10) airs on Monday 16 January 2017 from 9.00pm-10.00pm on BBC One.