Only thing new about this combo teenager and science-fiction yarn is a psychiatrist’s use of a problem teenager who comes to him for help using the youth for an experiment in regression, but it’s handled well enough to meet the requirements of this type of film.
There are plenty of story points which are sloughed over in the screenplay, but good performances help overcome deficiencies. Final reels, when the lad turns into a hairy-headed monster with drooling fangs, are inclined to be played too heavily.
Michael Landon delivers a first-class characterization as the high school boy constantly in trouble, and has okay support right down the line. Yvonne Lime is pretty as his girl friend who asks him to go to the psychiatrist, and Whit Bissell handles doctor part capably, although some of his lines are pretty thick.