What do the world's rarest whale, a luxury liner that became a floating inferno, a supervolcano with a plumbing problem, and a gut bacteria experiment that made old brains act young again have in common? All four had more going on beneath the surface than anyone expected.

In this episode of Gotta Be Kidding Me, host Tammy Coron covers four stories where the deeper you look, the weirder it gets. A spade-toothed whale known to science for 150 years but never once seen alive finally yields its secrets after washing ashore in New Zealand, revealing nine stomach chambers, hidden vestigial teeth, and a century and a half of unanswered questions. The S.S. Morro Castle, a 1934 luxury cruise liner that caught fire off the New Jersey coast, killing 137 people and then triggered an investigation so tangled and inconclusive it became a ...