Rodney Alcala was a predator who hid behind a charming smile and a camera lens. He posed as a photographer to lure victims, amassing hundreds of photos of unidentified women and children — some believed to be victims never discovered. In 1978, he even appeared on The Dating Game and won, all while actively m!rdr!ng. Behind his TV charisma was a calculating k!ll*r linked to at least eight confirmed victims — though investigators believe the number may exceed 100. His double life stands as a chill

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NEW: The handsome bachelor you’d die to meet. Don’t miss ‘The Dating Game Killer’ - the all-new 20/20 true crime special Friday night at 9|8c on ABC. | ABC 20/20

How did a handsome bachelor end up being a serial killer? Watch 20/20 'The Dating Game Killer' tonight at 9/8c on ABC. | ABC 20/20