5/8 DCI Gene Hunt's former colleagues, DCI Litton and DI Bevan, turn up on his patch.
4/8 Gene and the team must protect an undercover policewoman investigating a drugs ring.
3/8 DCI Gene Hunt and his team investigate a series of politically motivated arson attacks.
2/8 DC Chris Skelton opens CID's post and discovers a human hand.
1/8 Change is in the air at CID, and the team works on the kidnap of a young girl.