Mike Sammes (signature music).
Dennis Wilson (incidental music).
Episode synopses (via Radio Times):
Episode one
Charles plainly has designs on Elizabeth. But she and Samantha have designs of a different kind. (Radio Times, 3 June 1971, p.45)
Episode two
A highly successful confidence trick pulled by Charlie and the girls almost ends in disaster. (Radio Times, 10 June 1971, p.45)
Episode three
A highly ingenious confidence trick on Mr Uskudar almost comes to grief because Charlie and the girls cannot resist trying to con each other. (Radio Times, 17 June 1971, p.49)
Episode four
Through no fault of their own, surprisingly enough, Charlie and the girls fall foul of the local police and have to make a hasty getaway. (Radio Times, 24 June 1971, p.51)
Episode five
Humiliation at the hands of his Swiss Bank Manager prompts Charlie to try and con Elizabeth and Samantha. (Radio Times, 1 July 1971, p.43)
Episode six
Charlie's in Geneva, still trying to trace the girls. But they're in Tokyo ... (Radio Times, 8 July 1971, p.45)