Secretly, Greatly

They spent so long pretending to be ordinary that the pretending felt ordinary. Three North Korean sleeper agents are ordered to kill each other or be killed. The plan works beautifully until it falls apart completely.

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Jang Cheol-soo directed Secretly, Greatly in 2013. See Jang Cheol-soo's full filmography, where to start with Jang Cheol-soo, or where to go after you've seen everything by Jang Cheol-soo.

Secretly, Greatly was released in 2013 (KO original-language production), with a runtime of 124 minutes.