The Arsenal Stadium Mystery

An amateur footballer drops dead shortly after half-time in a match between Arsenal FC and top amateur side The Trojans in front of 70,000 spectators— every one a witness to murder. Inspector Anthony Slade of Scotland Yard arrives at the Arsenal Stadium to investigate and is immediately faced with two questions: Who was the mysterious girl who inquired after the murdered player after the match, and who was the last person to leave the visiting team's dressing-room?