The Black Windmill

The ultimate exercise in controlled terror.

A taut 1970s spy thriller about a lone agent forced into vigilantism when institutional betrayal leaves him no choice but to pursue his son's kidnappers himself.

A British agent's son is kidnapped and held for a ransom of diamonds. The agent finds out that he can't even count on the people he thought were on his side to help him, so he decides to track down the kidnappers himself.