A self-employed lorry driver is determined to find the criminals responsible for hijacking him.

When a corpse is found in the Thames, the only clue is that the dead man was killed by a karate or judo expert.

The cat and mouse game between government agents and a spy ring that has taken secret documents from a plane crash in Germany, not far from an US military research centre.

Two rival gangs are trying to fix horse races and a jockey is attacked and left for dead in a stage-managed car crash. An insurance investigator makes routine enquiries into the "accident" and one of the gang leaders feels threatened by this and takes counter measures.