Dexter: Original Sin will hit screens on December 13, 2024, and the release of the final trailer last week has fans excited for the serial killer origin story. Michael C. Hall's 'inner voice of Dexter' featured heavily in the trailer, and to the joy and surprise of many fans, he actually appeared in physical form, as the present day Dexter was rushed to hospital after being shot by his teenage son, Harrison. It's clear in the way that Original Sin is being promoted, that Michael C. Hall's involvement is vital to the success of the prequel series.