(HMG Celebrity News) – Bummer! Michael C. Hall, who plays ‘good’ serial killer Dexter on the Showtime series and his onscreen sister Jennifer Carpenter, who are husband and wife in real life are heading for divorce. According to TMZ, they have been separated for “some time,” and Jennifer is now set to file divorce papers. The couple quietly dated for about a year and a half, before eloping in California on Dec. 31. 2008. When the couple first moved in together, it reportedly angered bosses at cable network Showtime, who feared the romance will confuse fans of the show.