The office party was in full swing so no one heard the shot - fired at close range through the back of Lionel Hargreaves, elder son of the founder of Hargreaves Advertising Agency. The killer left only one clue - a pair of yellow gloves - but it looked almost as if he had wanted them to be found. As Inspector Bland sets out to solve the murder, he encounters a deadly trail of deception, suspense - and two more dead bodies.