S3·E8 Halloween II 1/2
Aired October 24, 1987
Synopsis
Samhain's goblins release the spirit of Halloween from the Ecto-Containment Unit, and he turns the firehouse into his fortress. The Ghostbusters' attempts to take him down are foiled when the Junior Ghostbusters are captured by the vengeful spirit, and it's up to Slimer to help get them out.