When Wade Williams acquired the rights to Edward D. Wood Jr.'s Plan 9 from Outer Space (1959) in 1982, Wood's widow, Kathy, told him of this never-released film that was being held by a post-production house because the lab fees hadn't been paid. Williams paid the fees and acquired this film as well.
The single photo on the police station wall is that of Edward D. Wood Jr..
Tor Johnson reprises his "Lobo" role from _Bride Of The Monster (1955)_. The "Lobo" that Tor plays in The Unearthly (1957) is not the same character.