Plot
A tanker off the New Jersey coast runs into an unusually thick fog. The captain hopes it isn't the New Jersey Parallelogram, but it is. The ship collides with the anomaly and vanishes.
At the Firehouse, a radio report describes the disappearance: the tanker went down about 130 miles west of Ambrose Light, the seventh ship lost in the area since 1980. Ray wants to investigate, but Peter declines because no one is paying them. Then Janine walks in wearing a red poncho and tells the guys to read its tag: "Venkman's Ghost Repellers." Peter is horrified, and Egon worries they could be jailed for fraud. The repeller does nothing when tested on Slimer. Peter's father, Jim Venkman, shows up, and Peter talks him out of selling any more of them, pointing out that he is still cheating people even if there is no law against it.
That night, after a job at a warehouse, the Ghostbusters give directions to a lost truck driver looking for Dr. Mulch of the MS Applegon, who is mounting an expedition into the Parallelogram. Egon warns that the area is a zone of dangerous cross-rip convergence and psychic turbulence, but the driver shrugs it off and heads to Pier 70 to deliver a load of Venkman's Ghost Repellers.
Three days later the Coast Guard visits the Firehouse. Captain Koenig asks the team to help rescue the Applegon, and Peter only agrees after Koenig says the words "Ghost Repellers." Meanwhile Jim, feeling guilty after hearing the expedition is overdue, rents a speedboat at the East River Marina and races out to help.
The Coast Guard and the Ghostbusters reach the fog bank and the Parallelogram's energy gate. Egon reverses the polarity on his P.K.E. Meter to detect reality and locate the Applegon. They tow the ship back, then spot Jim's empty boat and go back in for him, dodging the wreck of the Bismarck before reaching a dome-like structure where ghosts have cornered Jim. Their blasts weaken the structure; as it collapses, everyone escapes and watches the Parallelogram sink into the ocean. Egon regrets not being able to study it. Back home, Peter gets a postcard: his father has taken a job selling ice boxes to Eskimos in northern Alaska, which sets up the later episode "Cold Cash and Hot Water."
Cast
The regular voice cast featured Lorenzo Music as Peter Venkman, Frank Welker as Ray Stantz and Slimer, Maurice LaMarche as Egon Spengler, Arsenio Hall as Winston Zeddemore, and Laura Summer as Janine Melnitz. Ron Gans provided a guest voice.1 Lorenzo Music also voiced Jim Venkman in this episode; in the call sheet the character is listed as "Pops."2
Production
The episode carries production number 76009 and was recorded on July 2 and July 3, 1986.2 Writer Richard Mueller, a Coast Guard veteran who had served aboard a cutter, wrote the story as a tribute to the service; on the DVD commentary he notes that the cutter shown is accurate except for its colors. He has also said that Dr. Mulch's name derived from the Murch character in the film The Hot Rock, and that the torpedo sequence may have been influenced by The Hunt for Red October, which he had recently seen while writing the script.3
Richard Mueller first created Peter's father in his paperback adaptation of the original Ghostbusters film.4 Although "Venkman's Ghost Repellers" aired before "Cold Cash and Hot Water," in story terms it takes place earlier, and its ending leads directly into that episode.
Two versions of the episode exist. In the scene where the Ghostbusters rescue Jim, one cut uses the show's regular score while the other plays "Hometown Hero," a song performed by Tahiti from the series soundtrack album. The alternate music version appeared on a Magic Window home videocassette released in the 1980s.
Continuity
Jim Venkman recurs across The Real Ghostbusters. After this episode he resurfaces in "Cold Cash and Hot Water," where his refrigerator-selling venture in Alaska leads him to the imprisoned entity Hob Anagarak, and again years later in "The Treasure of Sierra Tamale," with Dave Coulier voicing the character in his later appearances.5
This was the only episode to feature the Ghost Repeller poncho. After the Pier Ghosts are trapped early on, the Ghostbusters also briefly run into the truck driver from "Sea Fright."
References
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Eatock, James and Mangels, Andy (2008). The Real Ghostbusters Complete Collection booklet, p. 8. CPT Holdings, Inc.
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Goodman, Marsha (1986). Episode Call Sheet and SAG Report, "Venkman's Ghost Repellers."
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Richard Mueller, visual commentary, The Real Ghostbusters - "Venkman's Ghost Repellers." Time Life Entertainment DVD.
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Eatock, James and Mangels, Andy (2008). The Real Ghostbusters Complete Collection booklet, p. 8. CPT Holdings, Inc. The booklet credits Mueller's paperback adaptation of the Ghostbusters film as the first appearance of Peter's father.
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Benjamin, Troy and Goldberg, Craig (2025). The Real Ghostbusters: A Visual History, p. 195. Dark Horse Books, Milwaukie, OR, USA. ISBN 9781506749273.