Watch The Monster of Phantom Lake: The Musical! for Free: How to Stream the Movie Online at 123Movies. . Based on the multi-award winning film, "The Monster of Phantom Lake: The Musical!" follows guitar-wielding, a-rockin' scientist Professor Jackson, his smitten graduate student and five swell teenagers as they discover the terrifying effects of "Atomic Waste" in the form of a horribly mutated shell-shocked-World-War-II-soldier/lake algae monster! "The Monster of Phantom Lake: The Musical!" was filmed in July of 2016, during the play's world premiere run at the historic Mabel Tainter Center for the Arts in Menomonie, Wisconsin!