they did not view the videos when they visited his apartment on april 30th. the visit came after rodger's mother and therapist had expressed concerns about his behavior. with more on rodger's troubled background, here's abc's david wright. >> a male wearing a white shirt. shots fired, shots fired. >> reporter: some of the people who knew the shooter best insisted they never saw this coming. >> elliot fooled everyone for a very, very long time. >> reporter: family friend, simon astaire on "gma." >> he was a removed, remote child. he hesitated. he shook when you met him. >> these you tube videos give some glimpses into his character. this one here, he stalks a young couple kissing on the beach. consumed with envy. in his rambling manifesto, he claims to have attacked others he envied writing at a party last year he tried to push a group of students off of a balcony. he said he squirted another group with a super soaker with orange juice and dumped coffee on a young couple kissing in line at starbucks.