 Their scientific experiments are interrupted when, through a huge drop of the chemical, they see a bathing-suit-clad Betty taking a shower on the roof of her penthouse.Distracted by Betty as she sings "Penthouse Serenade," they forget that the chemicals they've mixed are still on the boil, one of which turns into a Frankenstein-style monster.The creature sees Betty, and crosses over the phone wire to menace her.