Alex Trebek's last game show, outside of [Jeopardy! (1984)], the latter of which he would continue to host up until his death close to 30 years later.
On the show's premiere date, NBC mistakenly broadcast the pilot to the Eastern and Central time zones. Richard Kline was the host, and the episode featured a different set and announcer (Charlie O'Donnell).
Unfortunately for the show, Gordon Elliott was forced to relinquish hosting duties after only eight weeks due to a dispute with another production company, with whom he'd signed an exclusive contract. Lynn Swann moved over from the panel, but viewers didn't respond. Alex Trebek was pressed into action for Truth's final three months - making Trebek the first to host three game shows simultaneously (already holding down Jeopardy! (1984) and Classic Concentration (1987)). In fact, by the time Truth ended its run on 5/31/91, even Mark Goodson himself appeared as host, filling in on two episodes when Alex's wife went into labor.
The last revamped game show produced by Mark Goodson.
When Lynn Swann was working at ABC Sports, as a reporter, he had no choice other than to depart from the show, as host. He'd be replaced by popular game show host, Alex Trebek, who was under contract with both Mark Goodson Productions and Merv Griffin Enterprises.