Writer:	William L. Stuart
Director:	Harry Harris
Star:	Don Marshall (Dan Erickson),  Kurt Kasznar (Commander Alexander B. Fitzhugh),  Don Matheson (Mark Wilson),  Stefan Arngrim (Barry Lockridge),  Gary Conway (Captain Steve Burton),  Heather Young (I) (Betty Hamilton),  Deanna Lund (Valerie Ames Scott)
Guest Star:	Don 'Red' Barry (Zoral),  Kent Taylor (Doc Jelko),  Christopher Dark (Sergeant Barker),  Madlyn Rhue (Bertha Fry),  John Dehner (Lieutenant Grayson),  Willard Sage (Inspector Swan)

Author William L. Stuart wrote both this episode and "The Mechanical Man", which this episode refers back to. (edit)

Fitzhugh: Mark is absolutely right. I was trying to get to the truth like a real friend.
Mark: With some friends you don't need enemies. (edit) (channelling Scooby Doo)
Barker: And except for that little one in the vent it would have worked! (edit)

We see in the preceding episode ("Panic") that the SID have electrified the vents leading into their headquarters. A perfectly sensible idea, but why aren't they so wired in this episode? (edit) So who did take the flare gun and explosives? Mark, presumably, but it's never explained why he did this other than as a contrived plot reason to make him look suspicious. (edit) The Earthlings seem to have unbelievably extensive knowledge of the comings and goings of the SID operatives, knowing who retired and who took their place and who was in line for promotions. (edit) There is a reference to a carnival operator who held the little people captive. No such carnival operator appeared in any preceding episode, nor has the audience ever seen such a sequence of events. This might be a reference to Brady in the upcoming episode "The Marionettes", but that episode had not occurred already in either on-air or production order, and it was written by a different author. (edit) Steve and Dan seem awfully casual about moving camp, despite the fact they will have to leave behind the Spindrift, giving them almost no way to get back to Earth! (edit)

This episode does not have any allusions. Add some now!