A fourth alleged ransom note has surfaced in the disappearance of Savannah Guthrie's mother, Nancy Guthrie, 84. TMZ says it obtained an email sent Monday, February 16, from someone claiming to know who kidnapped her. The writer said, "I know what I saw 5 days ago south of the border," and claimed it was "definitely Nancy with them." TMZ reports the email used the same Bitcoin account as the first three notes and that account is demanding $50,000 for information.