year-old gary mabry of baltimore, a talented charismatic pipe organist hired by this church six months ago. no one suspected he was a registered child sex offender. >> it's heartwrenching to see him for who he is in this picture. how could we miss that? >> reporter: the church did a criminal background check before hiring mabriy, but it didn't turn up this 1999 conviction in d.c. for which he pleaded guilty to child sex abuse. in 2001 he pleaded guilty again to child sex abuse this, time in maryland. records reveal mabry served six years in prison and the court strongly recommended t...