a young girl who has run away from her home and is now appearing in a run-down end-of-pier theatre act. Unthinkably for the character during the ABC episodes, he invites Mrs Mortimer out for an evening at the theatre, together with the girl's aunt who has hired him. The partnership with Rylands soon splits up as Marker finds his working methods intolerable and makes it clear he thinks Rylands is less than honest with his clients. The final episode of the Brighton series was "A Fixed Address", broadcast (in monochrome) on 10 September 1969—although it was actually made in colour, as noted above (it is now shown in colour by TPTV as part of the re-runs of the complete Brighton and Eton series). The series afforded a great deal of character development to secondary characters. Mrs Mortimer's estranged husband turns up on her doorstep claiming that he wants to restart their relationship. It transpires that his employers have offered him a lucrative post in an exotic overseas location—but only if he is a married man accompanied by his wife. The episode is notable for Marker setting up on his own again as an enquiry agent. The end credits are played over shots of him admiring his new (but still run-down and dingy) office. The end credits returned to the original theme music of previous series rather than the barer, more static arrangement that had been used especially for the Brighton episodes. The Eton episodes Thames commissioned a further series, this time of thirteen episodes, and the fifth series began on 5 July 1971. Several ITV companies in the early 1970s faced strike action as unions demanded better wages for handling the more complex colour broadcasting equipment. As a result, the first five episodes of series five were made in black and white although they were juggled around for transmission so that all five were not shown together. The series opened with "A Mug Named Frank"; some months have passed since "A Fixed Address" and Marker is still living with Mrs Mortimer. She comments to him that his old problems are still present in Brighton—the police all know of him and of his record of being in prison. She also points out that, by his own admission, life has not been easy for Marker since he set up office on his own again and that he isn't getting much work. A