Silent Witness: The Complete Season Twenty

What do a people-smuggler, a photogenic young schoolteacher, a missing teenager and a father/son pair have in common? Alas, their remains are the most reliable witnesses of how they died, and if they were murdered who killed them. Following grisly clues, Dr. Nikki Alexander (Emilia Fox) and her team of forensic pathologists delve into London's illegal immigrant community, a toxic media storm, families camped on a riverbank, a shocking car accident and international kidnapping. In a case gone horribly wrong, Jack races to Mexico, where Nikki struggles for survival. Gruesome evidence and harrowing adventures make your heart pound in five more suspenseful cases in the long-running crime drama series.

• british programming
• mystery
• thriller