In the remote town of Ketchikan, Alaska, a beloved doctor is found dead in his home. At first, investigators think he died from a heart attack or by suicide. But when police take a closer look at the scene, clues point to something more ominous: Was Dr. Eric Garcia murdered?

In "Cold Blooded: Mystery in Alaska," Ketchikan police uncover a secret romance, the theft of hundreds of thousands of dollars in property, and a suspicious character with ties to the porn industry.

New episodes air weekly on Tuesdays starting July 29.

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