Silent Witness: Season 21, Episode 4

21 - 4: Duty of Candour, Part Two

Nikki comes face to face with CEO Simon Laing when it becomes apparent that the motive for the murders may have been blackmail.

When the team find that the hospital computer database has been hacked, Clarissa and Max follow the forensic clues to a teenage hacker called Splinter.

However the danger grows much closer to home when Nikki receives a threatening text with a picture of Thomas's daughter Rosie.