Dos gemelos, Jacki y Julian, viajan a Londres para ayudar de una forma peculiar a un jugador endeudado llamado Clive...
 | Judy Geeson | Jacki |
| Martin Potter | Julian |
| Michael Redgrave | James Harrington-Smith |
| Alexis Kanner | Clive Landseer |
| Mike Pratt | Rod Barstowe |
| Marian Diamond | Denise Pryce-Fletcher |
| Freddie Jones | David Curry |
| Peter Jeffrey | Detective Inspector Kingsley |
| Terry Scully | Nigel Garfield |
| Daphne Heard | Mrs. McLaren |
| Laurence Hardy | Minister |
| Joseph Fürst | Georgiu |
| Brian Wilde | Taxi Driver |
| Ricky Renée | Myra |
| Barry Scott | Audrey |
