Article continues below advertisementThe investigation into the disappearance of Nancy Guthrie has taken a sobering turn.After a ransom deadline passed without proof of life, experts warned that the demand may have been an elaborate hoax rather than evidence of a kidnapping.Article continues below advertisementPassed Ransom DeadlineSource: NBCA photo of an alleged suspect was released on February 10. The supposed abductors had set a 5 p.m. Arizona time deadline on Monday, February 9, reportedly demanding $6 million in Bitcoin for the return of the 84-year-old.