While Jack has problems with Curtis, CTU discovers a nuclear threat and raids a terrorist warehouse, and a shocking explosion shakes LA.

Jack's search takes him to the home of an old enemy, while a bomber slips into the White House.

The search for Gredenko finds Jack hunted inside the Russian Consulate and a former President calling on his ex-wife.

To find the remaining suitcase bombs, both Jack and the President set up bluffs.