Switchback (DVD)Scripter Jeb Stuart (Die Hard) made his directorial debut with this thri ller about an FBI agent in pursuit of a serial killer. Polit ically ambi tious Amarillo police chief Jack McGinnis (William Fichtner) uses a loca l murder to gain votes in his campaign, a setback for Sheriff Buck Olms tead (R. Lee Ermey), up for re-election. The situation looks better for Olmstead after FBI agent Frank LaCross e (Dennis Quaid) arrives to track the killer. LaCrosse has a personal agenda: he's .if your download do not automatically please press button beloww