- Alternate Character Interpretation: Some see Carreidas's descriptions of what an awful person he is (especially when he calls himself a "little reptile") as a hint that deep down he honestly regrets the life that he's led, especially when contrasted with Rastapopoulos's much more gleeful ranting about his misdeeds.
- Bizarro Episode: With the most explicitly supernatural third act since The Shooting Star, an unprecedented comic bent to the villains, and a healthy dose of Laser-Guided Amnesia for all involved at the story's resolution, this is often considered the strangest story in the series. It's been ventured that this is meant to be more an Affectionate Parody on Herge's own part than a tale to be taken completely seriously.
- Fashion-Victim Villain: Rastapopoulos spends the entire book inexplicably wearing a ridiculous pink shirted cowboy outfit.
- What an Idiot!: Yes, Carreidas, when you see Tintin about to launch a Conveniently Timed Attack from Behind on Spalding, go right ahead and say right out loud to him "Good for you! Take his gun!"
YMMV / Tintin: Flight 714