Undoubtedly, some of the baddest warriors of all time were the samurai of ancient Japan, known for their precision, honor and super cool swords. A samurai's sword, or katana, was one of the finest cutting blades in the known world, and one swordsmith became so skilled that he made a blade that was sharp enough to cut light, rendering its bearer invisible.
While tracking MacPherson, Pete walks into a room and confronts a local police officer, but when the man's head is sliced off by what seems to be thin air, he knows that MacPherson has hold of the supernatural blade.
Pete and Myka get sucked into a 1940s detective noir novel in search of an artifact. Meanwhile, Artie, Steve and Claudia chase down a phantom car thief.
Get a laugh with the best lines of Warehouse 13 Season 4, Episode 17.