The red bubble top car parked in front of General X's villa was designed by Daryl Starbird and was available as a scale model in construction kit form
This is the only episode where Kyrano is seen on-board a Thunderbird machine (in this case Thunderbird 1).
This is the first and only time Tin-Tin is seen on-board Thunderbird 1.
Cameo appearance by the Irish Farmer from Operation Crash Dive as crew member of the Martian movie - usually with a very long cigarette.
A more detailed glimpse of The Hood's lair is seen here as he converses with the government agent. The statue of Kyrano is surrounded by a circle of small golden heads, which is a bit prescient of a more macabre view in the film Apocalypse Now (1979).