One of the great films of noir intrigue, "The Mystery of the Double Cross" finds a man bound to inherit a fortune when a mysterious warning to, yep, avoid the "double cross" proves prescient after a woman bearing the mark enters his life. Coincidence or harbinger of doom? Either way, it's a must-see engagement of the episodic series in 8mm format. Egyptian Theatre, 6712 Hollywood Blvd., L.A. 7:30 p.m. Fri.-Sat. american cinematheque.com.