Asperger Syndrome Videos
Police Question Nathan Carman in Grandfather John Chakalos' Murder
Nathan Carman adamantly insists he's innocent in his grandfather's 2013 shooting death.
Nathan Carman Describes Seeing Mom For the Last Time at Sea: Part 1
Nathan Carman was rescued at sea by a freighter, while his mother Linda has yet to be found.
Asperger's May Account For Nathan Carman's Behavior After Sea Rescue
According to Dr. Rebecca Sachs, Carman's behavior might be explained by his Asperger's.
Rescued Boater Nathan Carman Says He Wasn't Responsible for Mom's Death
Carman, who was rescued after eight days at sea, denied that he sabotaged his boat or had anything to do with his mother's disappearance.
Son Who Was Last Person to See His Mother Alive Speaks Out
ABC News spoke exclusively with Nathan Carman about the fishing trip that ended with his mother's disappearance.
Meet NYC Man Who Commandeers Subway Trains, Buses
Darius McCollum, who has Asperger's, has impersonated NYC transit authority workers more than 100 times and has been arrested 32 times.
Tour the Emergency Operations Center in Georgetown, SC
ABC News' Janet Weinstein meets the emergency team in charge of responding to Hurricane Matthew in South Carolina.
Son Rescued at Sea Speaks Out on Mother's Disappearance
Nathan Carman, 22, told ABC News he "wasn't responsible" for the death of his 54-year-old mother, Linda Carman, after their boat sank in the Atlantic Ocean.
Rescued Boater: 'I Wasn't Responsible for My Mom's Death'
Nathan Carman, the 22-year-old man rescued after eight days at sea, denied today that he had anything to do with the disappearance of his mother, who is presumed dead after their boat sank in the Atlantic Ocean.
Mother Lost at Sea Still Missing
Police search the son's home for clues or insight on what might have happened.