Professor Leo Dalton : actor : William Gaminara | Professor Leo Dalton : series : Series 6-16 | Professor Leo Dalton : notes : Leo first appeared in the episode The Fall Out where he was nothing more than a simple doctor. However he was promoted to professor after former professor Sam Ryan left. In the episode Ghosts both his wife Theresa and his daughter Cassie are killed in a car accident. He began a relationship with fellow professor Janet Mander in Safe but ended their relationship in the episode Domestic. Leo often took a strong opinion on cases and often became emotionally involved. He died in the series 16 finale 'Greater Love' when he sacrificed himself to save many others from a terrorist bomb explosion.
An actor in Silent Witness