The person who says they know who kidnapped Nancy Guthrie is giving the feds one last chance to pay up before they give up trying to help. As we previously reported, TMZ received an email on Wednesday from someone claiming to know the identity of Savannah Guthrie's mom's kidnapper and asking the police to send 1 Bitcoin, which is worth around $66,000, in exchange for that information. The note said: "If they want the name of the individual involved then I want 1 Bitcoin to the following wallet. Time is more than relevant.