Celebrity Jennifer Carpenter, Michael C. Hall Finalize Divorce The Dexter siblings filed to end their marriage a year ago, citing irreconcilable differences By People Staff Published on December 6, 2011 05:00 PM Share Tweet Pin Email Photo: Ann Porter/Broadimage It’s officially over for Dexter costars Michael C. Hall and Jennifer Carpenter. The exes, who play siblings Dexter and Debra Morgan on Showtime’s hit series, had their divorce finalized on Friday, according to court documents. Hall, 40, and Carpenter, 31, wed on New Year’s Eve in 2008. Separating in August 2010, Carpenter then filed for divorce, citing irreconcilable differences, in December. They have no children.– Dahvi Shira PHOTOS: Over and Out! 2011’s Biggest Bust-Ups