The search for Nancy Guthrie, the missing mother of Today show co-host Savannah Guthrie, is entering a critical new phase as troubling new details emerge about blood evidence inside the home where she disappeared. In this episode of Drop Dead Serious, Ashleigh Banfield reveals new information about blood discovered inside the home and what it could mean for the investigation. Ashleigh is joined by renowned investigative genetic genealogist CeCe Moore, the chief genetic genealogist at Parabon NanoLabs, whose work using DNA and family-tree analysis has helped identify suspects and victims in hundreds of criminal cases. If you have any information, call 1-800-CALL-FBI