First episode with Charles 'Bud' Tingwell as Inspector Reg Lawson and John Stanton as Sen. Det. Pat Kelly.
Charles 'Bud' Tingwell had appeared in Big Bad John (1973) while he was on a holiday in Australia. While he was filming the Division 4 episode, Alwyn Kurts left Homicide, and Hector Crawford asked Bud if he was interested in staying for a year and replacing Alwyn. He accepted the part following a family conference. Bud needed to return to England to put his affairs in order before taking up the Homicide role, so Crawford Productions took the opportunity to send a crew back with him and film some scenes for his debut episode in London.
This episode introduced a new title sequence that started with a Chrysler Valiant police car arriving at the Russell Street police headquarters, then showed the cast members involved in different aspects of police work. This sequence would be used for the remainder of the series with only a couple of minor changes required when the regular cast changed.