Holly Dunn is the only known survivor of the Railroad Killer...a serial killer who murdered at least 23 people across the U.S. and Mexico. He bludgeoned her boyfriend Chris Maier to death with a 52-pound rock and then turned his attention to her. Reséndiz sexually assaulted and severely beat Holly Dunn, who nearly died. Holly, went on to appear on the Biography channel television programs I Survived..., 48 Hours: Live To Tell, and the ID channel series Dates From Hell (episode 8,"A Killer Night"); her story was also told in the UK newspaper The Guardian. 

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