A third murder is discovered on school grounds and Leo realises the killings are connected to a sinister teenage pact. Meanwhile, Nikki proves her elderly victim died of hypothermia - but there is still a guilty party to be caught.
Episode rating
Cast of episode
80
16
4
- Professor Leo Dalton
- Dr. Nikki Alexander
- Dr. Harry Cunningham
- DI Shirley Maugham
- Dr. Caroline Anscombe
- Det. Supt. Charlie Ferguson
- Tom Wetherby
- 'Fish' Gerald Brown
- Kelly Wetherby
- DI Julian Vincent
- Kay Owen
- Hannah Duncan
- Sylvana
- Gemma
- Chris Duncan
- Mary Duncan
- John Duncan
- Miranda Anscombe
- Robert Owen
- Stephen Owen
- Walter Best
- Martin Gibbs
- Alison Garland
- School Boy