Episode 1

E1

The arrival of new girl Chrissy triggers some alarming behaviour in apparently well-balanced schoolboy Sam.

Episode 2

E2

With the death at the hospital causing suspicion, Sam must tread carefully. Jenny summons the courage to face a threat from the past.

Episode 3

E3

When Sam exposes Jenny's dark secret her world begins to unravel. Sam comes face to face with his father and Jenny finally begins to understand her son's true nature.

Episode 4

E4

With Sam's father released from prison, Jenny makes a desperate effort to get to the bottom of Sam's increasingly dangerous behaviour. But is she too late?