[s2e26] Heat Signature <100% OFFICIAL>

There are at least three films in the Heat Signature franchise mentioned in the episode. Episode Plot Context

In the episode itself, Marceline convinces Finn and Jake that her ghost friends can turn them into vampires so they can survive a trip to a "ghost dimension" to watch the movie. However, it turns out to be a played by Marceline and her ghost friends, who lead the duo through a series of "vampire" tests that are actually just dangerous stunts. [S2E26] Heat Signature

The film's tagline is "Under the ocean, no one will hear your death" —a play on the famous Alien tagline. There are at least three films in the

Within the show's universe, Heat Signature is a pre-war film series that Finn and Jake consider a must-watch. Key details include: The film's tagline is "Under the ocean, no

It follows a submarine crew that detects a "heat signature" from an enemy, only to realize they cannot find their own signature, suggesting they might be ghosts or in a supernatural situation.

It is described as a thriller/horror film set underwater.