A small time diamond merchant jumps at the chance to supervise the purchase and cutting of a large first class diamond. But when the diamond is stolen from him, he is blackmailed into pulling off a major heist at the Diamond Exchange, located at 11 Harrowhouse.
| Release Date | September 26, 1974 | |
|---|---|---|
| Status | Released | |
| Original Title | 11 Harrowhouse | |
| Runtime | 1h 34min | |
| Budget | — | |
| Revenue | — | |
| Language | English | |
| Original Language | English | |
| Production Countries | United Kingdom, United States of America | |
| Production Companies | Elliott Kastner Productions20th Century Fox | |