Showbiz must be treating former Get Smart agent Don Adams badly — he's been reduced to running the Adams Extermination Company. When he's sent to Horror Hill to eliminate the vermin from horror actor Lorne Chumley's mansion, the gang helps out, unaware of the dangers that lie within.

• Joe Ruby
• Ken Spears
• Joseph Barbera

• Frank Welker
• Mark Hamill
• Michael Bell