Teenage Mutant Ninja Turtles: Mutant Nation #4

Raphael's diversion turned rescue mission has erupted into a fight for survival! As he rallies to free his friends and forge a safe exit from the restricted stronghold, Metalhead goes deeper and makes a final stride toward his target. Can Raph still stop him from securing the secrets of this dimension, or will Metalhead make a supernatural escape? Join writer Tom Waltz and artist Vincenzo Federici for their white-knuckle conclusion to "Ambush at Area 51"! Then, in the final chapter of Erik Burnham and Mateus Santolouco's "Casey Jones: Agent of the Foot Clan," Casey and Karai meet for a devastating showdown that will set the tone for the tale to come in the TMNT ongoing!

Characters: Baxter Stockman, Captain Hendrix, Casey Jones, Director Braunze, Doctor Yuhasz, Karai, Kayleigh Ravenwood, Madame Null, Metal Head (TMNT), Mondo Gecko, Mutagen Man, Pepperoni, Pete (TMNT), Raphael, Ray Fillet, Sally Pride