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.

After a mysterious 911 call leads police to a riverboat 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.

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. However, a deeper dive reveals a shocking illness and hidden truth about the couple's relationship.

In the wake of a violent storm, a Rhode Island harbormaster finds a badly decomposed body aboard a sailboat. Now, detectives must uncover the truth: Was the killer Mother Nature or a more nefarious force?

Fishermen find the body of a young woman floating in the coastal waters off Cape May, N.J. In the ensuing investigation, detectives discover the chains binding her ankles might be the missing link to solving the mystery of who put her there.

When a Florida couple goes missing, the discovery of a grisly bait freezer leads investigators through a precarious gauntlet involving a fishing boat, missing anchor, diamond ring and surprise informant who claims the truth is hidden at sea.

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

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