In November 2012, Daniel DeWild was on trial for murdering his ex-wife, Heather. With the help of his twin brother, David DeWild, they thought they could commit the perfect crime if they kept their mouths shut. But what happens when one twin turns on the other? Who will the jury believe? Erin continues the investigation and examines the research that went into Heather’s homicide, a torn jury’s considerations, and defense attorney Tom Ward’s suggestions that David, not Daniel, may be the twin to blame. Erin Moriarty takes you deeper into the conclusion of the "48 Hours" investigation, "The Devil's Twin".