Silent Witness

When four bodies are found in the Thames after a boat packed with illegal immigrants crashes, the team realises that it is dealing with a people-trafficking operation gone wrong.

The team must now find any remaining survivors from the wreck of the boat carrying illegal immigrants before a highly contagious disease breaks out into the community.

Harry is joined by Sergeant Susan Fenn to investigate a hit-and-run incident on a run-down council estate.

The pathologists investigate the death of a man found on a night bus, an office prank gone wrong, and a professional footballer's suicide.

Harry's ex-girlfriend, Penny Harris, is found dead after an unusual car accident.

Leo finds more inconsistencies in Jimmy Triangle's death and Harry forces Nikki to re-examine his ex-girlfriend's body.

Memories of his own daughter's death are stirred when Leo is called in to investigate the suicide of a young girl. Confusion arises when the case is linked to that of a car salesman. Meanwhile, Nikki investigates the death of an elderly woman.

Leo races to find a connection between two apparently motiveless murders as a third killing takes place at a school and the police decide they are looking for a serial killer. Nikki, meanwhile, proves that her elderly victim did not die as a result of being attacked.

Harry and Nikki are called out to a London dogs' home where the naked body of a teenage girl has been found tortured to death.

Harry finds himself in the middle of a high-level, dangerous cover-up and Lionel's hearing continues.