SERIES PREMIERE: Sofia Vergara of ABC’s Modern Family produced this new ABC series, which borrows the format and content of the Argentinian series Mujeres Asesinas. Tricia Helfer, from Battlestar Galactica, plays a Texas Ranger who, each week, goes after a different female fugitive, with some help (and affection) from a DEA agent played by Marc Blucas of Buffy the Vampire Slayer. Killer Women retains some touches from its international inspiration, including some visual flair and some Latin music, but the pilot, at least, is neither as serious or as playful as it could have been. Like Helfer’s Texas accent, it starts out noticeably uneven.