Time Bomb — Hartley Howard

The man had entered the 'phone booth and the bomb in his brief-case exploded a moment later...Glenn Bowman was engaged to find Rickie Oppenheimer, who had disappeared with twenty thousand dollars of racketeer Mike Schultz's money - in a brief-case. Was there a connection between the two incidents? Bowman follows one lead after another. Finally, he finds himself involved in a lethal situation in which he has to fight against a clock - with a bomb attached to it!