Published in TV Fun starting #60 and ending after #60, 11/06/1954 - 11/06/1954.
Alan Brady, Z.9, has his promised vacation delayed when he is sent to the great car racing track at Brookstone where a major international contest is scheduled to be held that coming weekend. A string of unsolved, mysterious mishaps have occurred, making the manager of the facility fearing that "some foreign team is trying to put their rivals out of the running".