One week after Savannah Guthrie's mother, Nancy Guthrie, mysteriously went missing, law enforcement returned to one of her children's homes to conduct a late-night search. On Saturday, February 7, around 10:30 p.m., police were seen going in and out of Annie Guthrie and her husband Tomasso Cioni's Arizona abode over the course of several hours, according to NewsNation's Brian Entin.