Nancy Guthrie update: A former FBI agent believes Nancy Guthrie's disappearance may be linked to a violent cryptocurrency crime. This theory, known as a 'wrench attack', involves physical intimidation to gain access to digital assets. While the theory fits some aspects, a retired detective suggests the case might not be a typical wrench attack.

Retired detective is now pointing to a chilling cybercrime tactic in Nancy Guthrie's disappearance.

Ex-FBI Jennifer Coffindaffer suggested Nancy Guthrie’s “porch guy” suspect may be linked to a “wrench attack,” revenge motive, or a lone suspect scenario.