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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.

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.

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.

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

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.