Route 666 (2001)

Haunted by his past, mob informant Smith abandons Witness Protection, seeking refuge in the desolate Arizona desert. Federal agents intercept him, narrowly evading a crew of ruthless hitmen determined to permanently silence him. During the escape, the agents inadvertently steer onto the infamous Route 666. This forgotten highway, steeped in local legend, conceals a dark secret regarding the demise of a prison chain gang. As they journey deeper, the trio uncovers the chilling truth behind the road's sinister reputation and its tragic history. Their flight for safety becomes a desperate fight for survival.