 Ruth DunningMiss Letty Frost / Irma Randall | Miss Letty Frost / Irma Randall |
 Nora NicholsonMrs. Louisa Sprule | Mrs. Louisa Sprule |
 Joanna DunhamFreda Maybury | Freda Maybury |
 Howard PaysJack Loring | Jack Loring |
 May HallattMiss Burge | Miss Burge |
| GGwenda WilsonJean Berry / Jean Hinton | Jean Berry / Jean Hinton |
| IIan ColinReverend Everard Porson | Reverend Everard Porson |
 Gladys HensonMiss Caroline Cassell | Miss Caroline Cassell |
 Barbara EverestMrs. Judson | Mrs. Judson |
| MMax BrimmellDoctor Spalding | Doctor Spalding |
 James RaglanSir Phillip Morstan | Sir Phillip Morstan |
 Trevor ReidInspector Craven | Inspector Craven |
| EElizabeth BegleyMrs. Caldwell | Mrs. Caldwell |
 Diana ChesneyMrs. Roberts | Mrs. Roberts |
 Jerold WellsGeorge Burling / Ned Barrett | George Burling / Ned Barrett |
| RRichard McNeffMr. Brown, the Chemist | Mr. Brown, the Chemist |
| JJan MillerGirl Assistant at Chemist | Girl Assistant at Chemist |
| JJackie NobleMaisie | Maisie |
| EEdna MorrisMrs. Millett | Mrs. Millett |
| DDeirdre ClarkeJoan Mason | Joan Mason |
| AArlene ButlerBunch | Bunch |
 Brian WeskeJim | Jim |
 Roddy Maude-RoxbyPug | Pug |
| JJohn LinePeter | Peter |
| FFrank SiemanPolice Sergeant Morris | Police Sergeant Morris |
| KKeith SmithConstable Kemp | Constable Kemp |
| FFrank HawkinsInspector Bartlett | Inspector Bartlett |
| BBarry WilsherSergeant Hewson | Sergeant Hewson |