Some witnesses say they saw a red truck outside Alexis' school around the time she vanished. Could it have belonged to a serial killer?

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For more reporting on cold cases, unsolved cases and true crime detectives, as well as additional true crime stories and investigative journalism visit witness.usatoday.com. Crime reporter and investigative reporter Gina Barton is also host of Untested: A true crime podcast, in which Annie Harrison joins the rank of true crime detectives as she solves the cold case of a possible serial rapist. Subscribe to Untested: A true crime podcast at https://art19.com/shows/untested

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