An alleged Maryland pedophile’s worst nightmare came true when he met Chris Hansen, the former host of “To Catch a Predator.” In a segment of his show, “Takedown,” Hansen helped police in a sting operation that led to the arrests of nine suspected pedophiles across Maryland, Pennsylvania, and Virginia, according to WBFF-TV in Baltimore on Tuesday. The operation occurred in October, when the suspects thought they were messaging underage boys or girls but were actually texting police.