Professor Freeman is an important English scientist that is investigating a method to treat cancer. His daughter is killed in the swimming pool of a hotel in Beirut. The case is confidential so that the mission is entrusted to the Special Agent Mikel Brown.
| Release Date | April 4, 1966 | |
|---|---|---|
| Status | Released | |
| Original Title | Le spie uccidono in silenzio | |
| Runtime | 1h 25min | |
| Budget | — | |
| Revenue | — | |
| Language | Italian | |
| Original Language | Italian | |
| Production Countries | Italy, Spain | |
| Production Companies | ||