Tricia Helfer, one of the stars of SCI FI Channel's original series Battlestar Galactica, told SCI FI Wire that her characters—all variations of the Cylon Number Six—will face challenges as the series returns with new episodes at 10 p.m. on Jan. 21. "I think it's mostly Caprica Six, and she's kind of at a crossroads," Helfer said in an interview at the Television Critics Association winter press tour in Pasadena, Calif., last week. She said that the character will do something that won't be looked on kindly by her fellow Cylons. Caprica, the original Six model, will make a fateful...