Comic-Con 2012 schedule: Final 'Twilight' panel and 'Dexter' headline opening day

The countdown to the end of "The Twilight Saga" on movie screens can officially start on July 12, when the cast makes its final Comic-Con appearance in support of the movies. Comic-Con International has released the schedule for the opening day of the 2012 convention. "Twilight: Breaking Dawn Part 2" will kick things off in Hall H, the biggest room at the San Diego Convention Center. The movie hits theaters in November.Other Day 1 headliners include sessions for "Dexter," which will feature both new cast member Yvonne Strahovski ("Chuck") and a trailer for fellow Showtime series "Homeland"; USA's "Psych," featuring a peek at episodes from the coming season; and The CW's new series "Beauty and the Beast" with Kristin Kreuk.Other Hall H sessions include one for Walt Disney Studios' "Frankenweenie," "Oz the Great and Powerful" and "Wreck-It Ralph" and one for "The Expendables 2" with Sylvester Stallone and Co.Warner Bros. TV is also hosting preview...