The lovable Munster family finds their placid world turned into turmoil by the diabolical Dr. Diablo, the mastermind of an art heist using monster robots, including clones of Herman and Grandpa.

Ornithologist Abner Peacock sells off his modest-selling birdwatching periodical to a charlatan who turns it into a girlie mag, making it a massive financial success. After Peacock and the magazine are taken to court on obscenity charges, he unwillingly becomes a reluctant hero and ends up a swinging libertine.

An electronics genius, who is an ex-con, and four of his lady friends devise a plot to steal millions of dollars from the Chicago Transit Authority. A detective, who had been keeping tabs on him since he got out of prison, suspects that he is up to something and tries to catch him at it.

Reluctant New York City private eye P.J. Detweiler is hired as a bodyguard to protect Maureen Preble, the mistress of shady millionaire William Orbison. In truth, Orbison plans a deadly intrigue in which P.J. is to play a central part. Meanwhile, complications ensue as P.J. gradually falls in love with Maureen.

Luther Heggs, a typesetter for the town newspaper, pitches an idea for a story about a local haunted house where a famous murder/suicide occurred 20 years earlier. After the editor assigns Luther to spend one night alone in the mansion, Heggs has a number of supernatural encounters and writes a front page story that makes him a hometown hero...until the nephew of the deceased sues him for libel.