So this missing submersible that went to view the Titanic? This is 100% the plot of one of Cape Cod Radio Mystery Theatre’s episodes. Specifically, my favorite one: “Mr. Hugo’s Night to Remember.”

It’s actually kind of scary how similar the two stories are at the surface level (OH MY GOD NO PUN INTENDED), though I suspect a lot of the specifics of the CCRMT episode were drawn from the rescue of the Pisces III that happened in 1973. Though that’s not mentioned in the liner notes.

Freaky.