I've still been looking for the time to catch up with this series, but apparently plenty of other people have done so. The word from Showtime:
SHOWTIME has ordered a second season of its freshman drama DEXTER, starring Emmy®- and Golden Globe®-nominated actor Michael C. Hall (“Six Feet Under”), it was announced today by Robert Greenblatt, Showtime President of Entertainment. DEXTER premiered last month to widespread critical acclaim and ranks as SHOWTIME’S top-rated series. Production is set to begin on 12 new episodes next spring and will premiere on SHOWTIME later in 2007. The series follows Dexter Morgan (Hall), an incredibly likeable forensics expert for the Miami Police Department who moonlights as a serial killer.