January 8, 2010 4:16 pm Mystery of Missing South Philly Teen Jason Vu, 14, is missing since Christmas Eve and there are no signs as to what happened. “I’m afraid somebody hurt him, please call”, his frightened mother said. US & World Videos 1:47 New nationwide Xfinity ad features 3 Vietnam War vets as Military Appreciation Month begins 1:08 Philly police believe teenage girl stabbed grandmother to death inside rowhome 2:10 ‘You're speechless and can't believe what you saw.' Mom sees video of attack on her autistic son on SEPTA train 0:39 1 dead, 3 injured in Eastwick after two separate shootings, police say 0:22 Rescue crews call off search for missing kayaker in Schuylkill River