Could the death of a 12-year-old quadriplegic, who suffocated in his own home, have been deliberate? The suspects range from the dead boy's parents to his older sister. Once revealed, the perpetrator claims to have been an angel of mercy -- a statement which might actually be a smokescreen for a "thrill killing." Telecast April 24, 1998, "Burden" was one of the few Law & Order episodes to be seen on a Friday evening, rather than its customary mid-week time slot. ~ Hal Erickson, Rovi