Continuity mistake: In the opening scenes, the smudges and rips in Straker's black shirt keep appearing, disappearing and changing configurations between shots as he races through S.H.A.D.O. HQ and the Harlington-Straker studio lot. (00:04:30)
Revealing mistake: In this episode the aliens with the help of 'turncoat' Turner have frozen a moment in time in which they will attack and destroy SHADO HQ. Everything and everyone is frozen in place - except for the guy in the background walking across the road during Straker's and Turner's 'car' chase in the 'Harlington/Straker' go carts.
Other mistake: When Striker and Turner are fighting on the landing with the bookshelves, Turner's stunt-double is wearing his belt with the belt tip facing his left side, whereas the actor is wearing it the opposite way, with the tip facing his right. (00:37:50)
Revealing mistake: While Straker and Col. Lake enter the studio lot, they make a few stops, then exit the car; the silver metal rods holding the doors up are visible in a few shots. (00:16:50 - 00:18:50)
Revealing mistake: When Straker and Col. Lake stop to check out the frozen people (fixed like statues), Lake spots a bird frozen in midair, and in the bird's close-ups the multiple wires (more than six) holding the fake bird are visible. (00:18:40)
Deliberate mistake: After Straker shoots Turner, he slumps over in his HS mini car and it goes around in circles. Then, the last shot of Turner is a flipped shot; note Turner's uniform patch and the car's backwards HS. (00:46:05)
