Rebecca Calder

An anomaly opens in the middle of a car breaker's yard, and a Cretaceous-era dinosaur comes through - followed by a medieval knight on horseback who thinks he is chasing a dragon. Now the team must not only deal with a dinosaur on the loose but also with a deranged knight convinced he is a new Saint George.

Nikki reaches out to Becky to help her deal with her trauma, as her father is implicated in the killings. Jack's paranoia about Clarissa leaving deepens further when the pair join forces with Max. And the death of a schoolteacher proves key to the mystery.

When an East End father and son are killed in a shocking road accident, Nikki and Jack find themselves working alongside a police officer with a vendetta. Clarissa summons her husband Max, a digital forensics expert, to help crack the case - and uncovers disturbing video evidence.