National Geographic Society

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Murder on the Lake

Reenactment: Tiffany and David Hartley jet skiing before cartel members shot David Hartley.

Check your local listings.

National Geographic Channel's Border Wars special Murder on the Lake is a ripped-from-the-headlines television event that confronts one of the most serious threats to American security today. Our cameras return to the scene of David Hartley's murder on the otherwise placid looking Falcon Lake, and retrace his final hours through the eyes of his grieving widow Tiffany. Expert interviews explore how David's suspected murderers, the Zeta cartel, operate along the Texas/Mexico border, funneling drugs and illegal immigrants northward -- ready to kill anyone who strays into their path. David's murder has brought into focus the growing fear that the violence may be heading north.