A man's sanity is a point of contention as he confesses to murdering an elderly man, driven by the victim's pale blue 'vulture eye', culminating in guilt-induced auditory hallucinations of the victim's beating heart.
| Actor | Role |
|---|---|
 Laurence PayneEdgar Marsh | Edgar Marsh |
 Adrienne CorriBetty Clare | Betty Clare |
 Dermot WalshCarl Loomis | Carl Loomis |
| SSelma Vaz DiasMrs. Vine | Mrs. Vine |
| JJohn ScottPolice Inspector | Police Inspector |
| JJohn MartinPolice Sergeant | Police Sergeant |
 Annette CarellMrs. Fowler, Betty's Landlady | Mrs. Fowler, Betty's Landlady |
| RRosemary RotherayJackie | Jackie |
| SSuzanne FullerDorothy | Dorothy |
 Yvonne BuckinghamMina | Mina |
| DDavid CourtneyBit Part | Bit Part |
| RRichard BennettMike | Mike |
| JJoan PeartStreet Girl | Street Girl |
| EElizabeth PagetElsie | Elsie |
| NNade BeallOld Crone | Old Crone |
| PPamela PlantManageress | Manageress |
 Graham AshleyNeston | Neston |
| DDavid LanderJeweller | Jeweller |