Captain Scarlet and the Mysterons

Mysteron Reconstructions: Captain Indigo (shot by Black/shot by guard, electrocuted by Scarlet).

Spectrum Losses: Captain Indigo is killed, reconstructed as a Mysteron and killed again.

Collateral Damage: Hunting lodge furniture.

Dr. Giadello has Captain Indigo bring the Mysteron Detector downstairs to the meeting, yet the whole purpose of the meeting was to discuss the detector and the gun, so it seems odd that he would forget one of the 'stars' of the show.

The design of the hunting lodge seems rather ridiculous. Instead of lowering the whole building down into the ground, a lift or even a flight of stairs would have sufficed to get into the basement offices. Captain Indigo even uses a lift to get down into those offices later on. A flight of stairs or that lift wouldn't have tried to crush everybody either.

Apparently the lift in the hunting lodge can't be used while the lodge lowering mechanism is in motion, but Scarlet manages to get up to the lodge via the lift after Indigo had already set it in motion and taken the key.

Captain Scarlet gets nauseous when the Park Ranger aims his gun at him, but the nausea has only ever been caused by the presence of a Mysteron. The Park Ranger wasn't a Mysteron as far as we know.

The establishing shot of Cloudbase shows three Angels on the flight deck, but as Rhapsody returns there are only two, with her aircraft making three.

The Mysteron detector has a vertical lens, but all shots with the camera looking through the viewfinder (the user's eye view), the image seen through the lens is horizonal. This would also be the case in later episode featuring the detector.

After killing Captain Indigo with the Mysteron Gun, Scarlet says to the Park Ranger: "This is the only gun that can kill a Mysteron". This means that every other Mysteron discovered up to this point (excluding Dr. Magnus from the previous episode) were not killed properly, such as the garage mechanic from "Manhunt" and Ensign Soames in "White as Snow". Given the Mysteron healing abilities demonstrated by Scarlet, these Mysterons could well still be at large.

The prop gun, used in the close-up shot of Captain Black firing his gun doesn't use a proper special-effect to fire, and instead just uses a light flashing effect.

When the original Captain Indigo returns to the ground level of the hunting lodge, the grided lines of the interior don't line up with the original ones.

After the Mysteronised Captain Indigo shouts to Captain Scarlet, "Come and get me, Earthman", he fires two shots, and after he does so, a shot of him resting and waiting for Scarlet to come and get him shows him fire another shot, but his body movement doesn't suggest this, as his gun is pointing in the wrong direction, and his arms are not moving like they did before.