After seasickness and choppy waters cause a wife to fall from her husband's fishing vessel, the race is on to save her from the waters of Lake Erie; a deeper dive reveals a shocking illness and hidden truth about the couple's relationship.

After a mysterious 911 call leads St. Marys, GA police to a trawler boat engulfed in flames, they fear the call may have come from inside the vessel; as the smoke settles, detectives must determine if the blaze was accidental or intentional arson and murder.

Three missing fingers point to the identity of a body found off the coast of Catalina Island, plunging authorities into the mysterious investigation of a wealthy mogul, luxurious yacht and a manhunt for a killer hiding in an unlikely place.

The police get word of a woman being swept off her boat by a rogue wave in Newport Beach, CA; search teams race to find her before it's too late; detectives soon suspect that rough seas weren't the real culprit.

Investigators discover a grisly bait freezer, a fishing boat, a missing anchor, a diamond ring and more after a Florida couple goes missing.

A Bahamas-bound charter boat is discovered 140 miles off course; investigators wade through blood evidence and accounts of a possible pirate attack in the search for survivors and answers.

In the wake of a storm, a Rhode Island harbormaster finds a decomposed body aboard a sailboat; detectives must uncover the truth.

After fishermen find the body of a young woman in the waters off Cape May, detectives discover the chains binding her ankles may be the missing link to solving the mystery of who put her there.