Sweet Tooth season 3 episode 4, "Beyond the Sea," is one of ... along with the notes about not making landfall again. “This has to end here,” the captain wrote, and now, Darwin won’t help ...

Here’s everything to know about that big cameo. Warning: major spoilers for Sweet Tooth season 3 ahead ... but once they got to season 3, they knew they had to end the show with him on screen.