Fourteen-year-old Michael Crowe of Escondido, Calif. confessed to murdering his 12-year-old sister, Stephanie, in her bedroom in January 1998. But was he telling the truth or was it another man, a drifter named Richard Tuite, who stabbed Stephanie while she slept? 48 HOURS Correspondent Bill Lagattuta has been following this case since it began in 1998 and reports for 48 HOURS MYSTERY: "Who Killed Stephanie Crowe?