The high school principal and the film's primary antagonist. He kidnapped Gracie as a child and murdered Patrick Chang after mistaking a photo of Melody for Caroline. He orchestrated the school fundraiser theft to test Abe's skills. His crimes are exposed by Abe, leading to his suicide and Gracie's rescue.
Erwin abducted and imprisoned Gracie, holding her captive for decades.
Caroline is the unintended victim of Erwin's past crimes and mistaken identity.
Abe directly opposes and exposes the principal, leading to his downfall.
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