J2 Dexter-style Fanfic..
Jensen is an accomplished forensic pathologist hiding a secret life as a serial killer—a serial killer with a code that means he only murders other killers. His sister, Danneel, is lead homicide detective in the Dallas Police Department and Jensen works alongside her to solve cases, hiding his double life. A recent series of serial killer murders leads Jensen down a dark path of romantic messages secretly directed at him. Investigation leads them to Parkland Memorial Hospital where Jensen meets renowned trauma surgeon Jared Padalecki. Jensen is undeniably drawn to Jared by something he can't define, something he's never felt outside of killing. As the messages from the killer become more intricate, Jensen is pulled deeper into darkness, and unable to deny his attraction to Jared, he eventually finds himself at a terrible crossroads. Can he continue to keep his double life a secret and still discover the killer's identity? Or will he lose his code and everything he knows he should care about in the process?
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https://archiveofourown.org/works/12546612