The episodes "Faces" and "Thou Shalt Not Kill" were broadcast during the second series. In the former, a communist group (which appears to be German-based, with echoes of the then-contemporary West German communist terrorist group the Baader-Meinhof gang) is staging heists to raise funds for its cause. However, the group has been infiltrated by British Secret Service MI5, leading to inter-departmental politics between the police and the security services. "Thou Shalt Not Kill" features a tense hostage situation inside a bank, with Haskins faced with the dilemma of whether to risk the hostages' lives by shooting the criminals.