Trey Borzillieri

Mikey Kay and Garth Baldwin investigate the Knights Templar's underground movements to discover if they escaped being destroyed in 1307, and most importantly if they took the Holy Grail with them. Searching through the middle east, they attempt to uncover modern evidence of this secretive group which could unravel the truth which has been hidden for hundreds of years.

This baffling true crime story starts with the grisly death of a pizza man who robs a bank with a bomb around his neck - and gets weirder from there.

A look at the hunt for California's Zodiac Killer, who murdered at least five people in the San Francisco Bay Area in the late 1960s and early '70s.