Rowena Wallace (Kat Loader), Sue Lloyd (Joy Loader), Noel Ferrier ('Melody' Sam Loader), Peter Gwynne (Jim Thursley), Don Barker (Alec Bryce), Danny Adcock (Tony Carr), Tony Wager (Const. Harry Harmon), Jessica Noad (Esther Harmon), Maurie Ryan (Abie), Alan Walden (Dan Roberts).