Leopold & Loeb
This infamous pair was among the first to admit to a ‘thrill killing’. When 14-year-old Bobby Franks went missing in May of 1924, his family received a ransom demand by telephone. To the Franks' horror, however, Bobby's body was discovered at almost exactly the same time as the ransom was to be dropped off. The only clue was a pair of eyeglasses discovered near the body. Police were amazed when they traced the glasses to 19-year-old Richard Leopold. He was a college student, the son of highly respected parents, and friend of Richard Loeb, another locally respected student. What finally emerged from the investigation was a horrifying portrait of two intelligent young men who killed for no other reason than to try and commit the ‘perfect crime’. Bobby's abduction and murder had been carefully planned and had Leopold not dropped his eyeglasses, Leopold and Loeb would probably have got away with it.

D.B. Cooper
On the day before Thanksgiving in 1971, an ordinary man who identified himself as Dan Cooper paid $20 for a one-way Northwestern flight from Portland to Seattle. Once the 727 was in the air, Cooper passed a note to the flight attendant, who slipped it in her pocket. Cooper leaned over and said, "Miss, you'd better look at the note. I have a bomb". Cooper demanded $200,000 and four parachutes. The plane landed in Seattle, where Cooper was given what he had requested and all other passengers and two flight attendants left the plane. Cooper instructed the pilot to fly towards Mexico, but at an altitude of only 10,000 feet with wing flaps open and landing gear down to slow down the plane. At about thirty minutes after takeoff, cockpit instruments showed the rear stairway had been extended. When the plane landed in Reno, Cooper was gone, as was the money and two of the parachutes. Cooper vanished completely. In 1980, a small boy digging in the sand in Vancouver found $5,800 of Cooper's money. It was so badly eroded by the water that only the serial number were left. Authorities suspect the money somehow ended up in the water and was buried there by the tides. The rest of Cooper's money has never been found, nor has any other evidence of Cooper. His is the only unsolved domestic hijacking in the US - despite interviews with almost 10,000 potential suspects and a 60 volume FBI case file.