Answer: CONTRAIL
The answer CONTRAIL has 14 possible clues. See the results below.
Possible Clues:
- Condensed vapour left behind high-flying aircraft
- Vapour visible behind airliner
- Streak in the sky
- Condensed vapour line behind aircraft
- Prisoner heading for that bar, providing evidence of flight
- Charlie on hiking route sees skyline?
- Follower of a plane ... or a hint to this puzzle's theme
- Skyline against one lake
- Airplane's wake
- Jet's visible vapor streak