![]() | Dr. Laurience, a brilliant but unstable scientist experimenting with transferring minds, becomes vengeful when his magnate patron withdraws his support. |
| Boris Karloff | - | Dr. Laurience |
| John Loder | - | Dick Haslewood |
| Anna Lee | - | Dr. Clare Wyatt |
| Frank Cellier | - | Lord Haslewood |
| Donald Calthrop | - | Clayton |
| Cecil Parker | - | Dr. Gratton |
| Lyn Harding | - | Prof. Holloway |
| Clive Morton | - | Journalist |