- Actor Allusion: In one early episode Judge Bone (Ray Walston) attends a Halloween party dressed as Uncle Martin from My Favorite Martian.
- In another episode, Carter (wanting to examine a body who may have been exposed to extraterrestrial forces) says he doesn't believe in Martians. Judge Bone says he doesn't either.
- Completely Different Title: For some unfathomable reason, this series was marketed in France with the English title "High Secret City". French tropers have long learned not to try and determine an executive's thought process, for that way lay madness.
- Fake American: Rather surprisingly, Costas Mandylor who played Chicago-born Kenny was born and raised in Melbourne, Australia although the audience probably never would have guessed as such.
- Friday Night Death Slot: Averted. The show did very well on CBS's Friday Night Schedule.
- Those Two Actors: Costas Mandylor and Lauren Holly (Kenny and Max) also starred opposite each other in the romantic comedy Just Desserts in 2004 and yes, the chemistry was still there nearly ten years later.
Trivia / Picket Fences