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. Written by
The ultimate exercise in controlled terror.
Did You Know?
At the start of the film where the van is blown up on the motorway, it becomes clear that the scene is filmed on an incomplete stretch of motorway (possibly the M3, which was completed in 1974) as lane markings are missing from one carriageway. See more
The opening credits are formed from images of children's alphabet blocks. See more
Underneath the Spreading Chestnut Tree
(trad.) See more