Malcolm Munro, the son of the Chairman of Munro Motors drove into a hostile situation. The workers were being whipped up to fever pitch by the antics of a Union official, Mike Grannett. Violence ensued and there was an altercation between Munro and Grannett's younger brother which resulted in the latter being rushed to hospital, where he died. All of the striking workers were, of course, going to provide hostile testimony as to Munro's actions. Chief Inspector Roger West of Scotland Yard is charged with the investigation. Can he save Munro from a murder conviction, or have the workers got it right? Just what is the truth?