Two Layers Deep
After becoming trapped in the enemy tunnel system, U.S. Marine Samuel Holt finds himself face-to-face with a deadly viper. The two make an unlikely alliance and forge ahead into the darkness. Holt soon learns survival doesn't come without a price.
Above ground, Holt's friend, Dustin Hollings, returns to base after the ambush. Convinced that Holt is still alive, he hatches a plan for a rescue mission with the help of a tough-as-nails field medic.