Within walking distance: the science center (presumably the same one mentioned in Genius at Work, however)
Why does the machine produce fully-dressed clones?
The double used for the shots of Valerie and her clone appearing together is noticeably shorter (about 1") than Ms. Lund.
Watch carefully when Dan wakes up in the cage with the others the first time. He has a noticeable rip in the *ahem* zipper area of his pants.
50-year technology gap: the giants have experimental cloning technology far in advance of what we have in 2001
During the sequence where Chipper is choosing between the two caged groups, listen and you can hear the clone-Valerie call Chipper "she". Not only is Chipper male, as established in previous episodes, but the dog is referred to as a male throughout this episode as well. The clone-Fitzhugh even calls him "boy" at practically the same time.
(calling the dog) Steve: Chipper...the big giant is going to wake up any minute...
(Last words of the clone-Dan before he sacrifices himself) Dan: So long, Steve.
Fitzhugh: How dare you ignore me? I'm Alexander Fitzhugh!
The cloning tubes used in the one duplication sequence with Dan are the ones used as props in the Jupiter Two on Lost in Space.
We hear a little backstory about Dan and Steve's history at the "academy".
Several strong continuity notes: reference is made to Dan in the Olympics (from "Deadly Lodestone"), the science center from "Genius at Work" is used again, and the knockout hypodermic from "Six Hours to Live" is utilized.
The dissappearing-clone music "sting" and the dissolve-effect are the same one used when the time travellers disappear in Time Tunnel.
Actor Don Marshall dislocated his shoulder in the scene where he jumped into the letter box.
Series regular Heather Young is not in this episode.
S 2 : Ep 25
Aired 3/22/70 (50:47)
S 2 : Ep 24
Aired 3/8/70 (50:54)
S 2 : Ep 23
Aired 3/1/70 (50:53)
S 2 : Ep 22
Aired 2/22/70 (50:53)
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