A love triangle turns deadly when a calm and collected Kaitlin Armstrong murders her boyfriend's "friend", Moriah Wilson. What follows is an international fugitive hunt as members of the U.S. Marshals Lone Star Fugitive Task Force track the yoga instructor to a small seaside town in Costa Rica. Join us for Part 1 of this three-part story that traces the hunt and capture of an elusive murderer in a country where the Marshals have no arrest or investigative authority!