Characters on Showtime's 'Sleeper Cell' Espouse How Bush and CIA Behind 9/11 Attacks Posted by Brent Baker on December 11, 2006 - 18:47. The premiere Sunday night of the second season of Showtime's week-long mini-series, Sleeper Cell: American Terror, gave time to two characters espousing how President Bush and the CIA were behind the 9/11 attacks. The eight-part series, airing for an hour at 9pm EST/PST (with an 11pm EST/PST) repeat every night through this Sunday on the CBS-owned network, picks up after last season which ended with an undercover Muslim FBI agent at the last-minute thwarting a plot to...