Valentine’s Day starts badly when the Iranian air force shoots down a British airliner, killing 100 passengers. The U.K. Prime Minister threatens to retaliate by bombing nuclear reactor sites, which…

Peter goes on a search. West convinces Claire to stand up to someone. Hiro struggles with his feelings for Yaeko. Suresh has more problems with the Company. HRG tries to…

Mac and Jack partner with older versions of themselves, a Russian bomb programmer and his estranged handler, to shut down a Soviet-era warhead in Moscow. But when the antiquated computer…

Elizabeth Prentiss, a foreign ambassador and SSA Emily Prentiss’ mother, seeks the aid of the BAU when a Russian immigrant is kidnapped and held for ransom.