Amateur football team The Trojans are about to face their toughest challenge - a charity match with Arsenal in front of a capacity crowd at Highbury Stadium. During the match, Trojan star player John Doyce (Anthony Bushell) collapses and is pulled onto the sidelines. He is dead and it transpires that he has been poisoned. A recent addition to the Trojans, Doyce's abrasive attitude gained him few friends, so there is both motive and suspects in abundance. Scotland Yard sends in the eccentric Inspector Slade (Leslie Banks) to get to the bottom of things and catch the culprit - and he has just three days to do it before it interferes with his theatre performance! Featuring Arsenal's 1938 Championship side and their manager George Allison, the match recorded for this film was Arsenal vs. Brentford Town - this was Arsenal's last game before the outbreak of the Second World War in September 1939.