In "Crime Sheet", Lockhart had now been promoted to Detective Chief Superintendent. The writers of the series revealed to the "TV Times" in 1962 that Lockhart could not be promoted above this rank, as he would no longer be expected to visit the crime scene, thus hindering the potential of the storylines. 17 episodes of 30 minutes were produced from 8 April 1959 to 9 September 1959. Due to Raymond Francis contracting mumps, the final episode of Crime Sheet did not feature Lockhart but Chief Superintendent Carr, played by Gerald Case.