Brody's sitting at the dinner table all depressed and lost in thought. His youngest son, Sean, starts mimicking his actions as Ellen watches. He gives his dad a much-needed kiss. On a cute scale of one to ten, this is an eleven.
Hooper arrives and invites himself in for dinner and actually starts eating from Brody's plate. He brought wine, though, so it's cool.
Ellen asks Hooper about his job. He says he's loved sharks ever since one of them ate his boat when he was a kid. Okay. Anyway, he's convinced those fishermen caught the wrong shark, and he plans to leave tomorrow and report as much.
Ellen tells Hooper that Brody's afraid of water. He's kinda touchy about it. After some discussion, Brody and Hooper decide to go cut the shark open.
Hooper cuts open the shark's digestive tract (thank goodness smell-o-vision never took off) and starts yanking stuff out. All they find is fish, a tin can, and a Louisiana license plate. No humans, so their shark is still out there.
Hooper wants to go look for it immediately and he strong-arms Brody into coming with him so they can prove to the mayor that they have to close the beaches.
They go out in the dark on Hooper's fancy boat and find the wreck of a boat that belonged to a fisherman named Ben Gardner. Brody wants to tow it in, but Hooper hops into the water to examine the hull with a flashlight.
He finds a very large shark tooth stuck in a hole in the hull. As he's looking for more clues, a grrrrrross severed head floats through the hole and scares the pants off of Hooper. He drops the shark tooth into the inky sea.