Silent Witness: Series 21
Season 21 Lore Primer
Key plot threads, lore context, and character stakes you need to remember before diving into this season.
- Directly follows the overarching narrative developments of Silent Witness Season 20.
- Faction dynamics and core character alliances shift under escalating external stakes.
- Crucial mysteries introduced previously reach key turning points and narrative reckonings.
- Sets up serialized story arcs that build directly toward the climactic season finale.
Episode Guide
Season 21 Progress Shield
Moment of Surrender (1)
Jan 8, 2018 · 60 min
Nikki struggles to come to terms with life back home and seeks out fellow pathologist Sally Vaughan for support, only to learn she is nowhere to be found. National Crime Agency inv
Moment of Surrender (2)
Jan 9, 2018 · 60 min
Nikki's suspicions about David Cannon are roused further when she discovers blood in the boot of his car an with Thomas's support she takes samples to process. Does it belong to Sa
Duty of Candour (1)
Jan 15, 2018 · 60 min
A series of tragic events are linked to the hacking of a hospital database.
Duty of Candour (2)
Jan 16, 2018 · 60 min
The team wonder if the hack is the only danger as they come under threat.
A Special Relationship (1)
Jan 22, 2018 · 60 min
A US diplomat is shot dead in central London, forcing the team to work closely with the embassy and the FBI.
A Special Relationship (2)
Jan 23, 2018 · 60 min
Nikki is still in shock as the team arrive at Matt's residence but insists on working at the Lyell, determined to help. When analysing crime scene photos and the positions of the v
One Day (1)
Jan 29, 2018 · 60 min
While two care home staff are chasing Kevin McDowd, a young man with learning disabilities and sociopathic tendencies, Nikki and Jack examine a fatal road accident where the deceas
One Day (2)
Jan 30, 2018 · 60 min
The team are determined to uncover the truth about unexplained deaths of patients at a care home. They are desperate to rescue Serena and return her to safety. Unbeknownst to her c
Family (1)
Feb 5, 2018 · 60 min
Nikki, Jack, Thomas and Clarissa are just settling down for their respective festive celebrations when they are interrupted by a call-out to a tragedy at a family home.
Family (2)
Feb 6, 2018 · 60 min
As the truth behind the McMorris family is revealed, the team is brought together by the conclusion of a shocking Christmas family tragedy. Reuniting with their respective families