| Director | Sidney Lumet |
|---|---|
| Budget | $1.4 million |
In 1960s London, Charles Dobbs is a staid MI6 operative investigating Foreign Office official Samuel Fennan, a former Communist who apparently commits suicide. Dobbs becomes suspicious about the cause of Fennan's death while visiting Fennan's widow the morning after his death. When a wake-up call is received at Fennan's home, his widow Elsa says the call was for her.