A mysterious disc found in the Sulphur Fork River brings a surprising outcome. Other finds include weapons buried in a family's backyard and two objects that might be of great historical significance.

The guys meet a man who says he can prove he has a bloodstained pistol that was owned by outlaw Jesse James. Dale visits a farmer who thinks he found proof of aliens in his own backyard.

While Blue and Mike examine what looks like an ancient axe, Dale inspects an artifact found in a storage locker which may be tied to a brutal practice used on slaves.

Dale meets a man who wants to prove he found the original knife of folk hero Jim Bowie, but they get an even bigger surprise. Plus, an alleged Viking artifact found in Maine and a possible Mayan idol.

The guys try to uncover why and how medieval scale armor was abandoned in the Arizona desert. Plus, they investigate an artifact that could connect to early Christianity, a sword found in a well, and a curious clasp.

Blue meets a family who found a death mask that could be evidence of a murder in the mines. Dale meets a man who thinks he has an ancient Egyptian scarab stone inscribed with a secret message.

A strange brass ball has Leonard and Blue intrigued, while Dale tries to figure out whether a man has a rare microscope owned by Thomas Jefferson.

The guys look at two objects that may be worth big money...if they're not cursed - a bird whistle and a strange pendant with a history of preceding bad luck.