Last August I got a call from the History Channel asking me to investigate the DB Cooper mystery and vet a suspect that a team of citizen sleuths had uncovered.

I was paired with a former FBI man, assistant director Tom Fuentes, and together we traveled up to the Pacific Northwest to interview witnesses, former and current FBI agents, scientists, and a host of other people involved with the Cooper saga. We probably conducted around 25 interviews in total, and met some real interesting folks. The four-hound special: DB Cooper: Case Closed? airs tonight on History.

Here is a bonus video from our interview with retired FBI special agents John Detlor and Robert Furhiman, who were on the ground at SEATAC the night of the hijacking.