One month into the disappearance of Nancy Guthrie, Savannah and her family made an emotional trip to the sprawling tribute of flowers and notes. Tom Llamas reports on their emotional appeal. | NBC Nightly News with Tom Llamas

A Delta Air Lines flight departing Houston’s Hobby Airport was forced to return after a man attacked flight attendants and other passengers. NBC News’ Tom Costello reports. | NBC Nightly News with Tom Llamas

New surveillance video released by the FBI has shed new light on the abduction of Nancy Guthrie, Savannah’s mother. NBC News’ Liz Kreutz on what the disturbing doorbell footage reveals about the masked subject. | NBC Nightly News with Tom Llamas