David (Bixby) discovers a Hulk creature that pre-dates his own alter ego and more importantly, the man (Townes) who cured himself of the beast long ago. But when the original Hulk (Townes as the man, Dick Durock as the creature) is resurrected, David finds himself compelled to help reverse the metamorphosis with the assistance of Townes' long-suffering wife (Lola Albright).
The confrontation between the two Hulks, while much anticipated, is a mis-match, such is the obvious muscular superiority of Ferrigno's Hulk. While matched in height, and both green in clothes cut to ribbons, there's nothing else remotely similar about the two Hulks and the tussle is a very one-sided bout. Despite this, Townes' motivations for wanting to restore his inner Hulk earn sympathy, and Bixby's realisation that he isn't cured of the Hulk is another emotive setback for the lonely traveller on his journey to cure the rage.
Billy Green Bush is notable as the local sheriff whom Jack MacGee (Colvin) approaches to help capture the Hulk, and the always attractive Lola Albright lends a certain prestige in one of her last screen roles to date. It's a top ten Hulk double-episode.