Carter and Grimes try to make a deal with the leader of a smuggling ring in order to find out the location of the terrorists for whom they've been searching. Amira and Khasan get a visit from an unexpected guest, while progress is made on the leak.
A military hero who returns to the US with a whole lot of trouble following him back. With nowhere else to turn, the man asks CTU to help him save his life while also stopping one of the largest-scale terror attacks on American soil.