Useful Idiot (Homeland)

When Dante (Morgan Spector) awakens, Carrie (Claire Danes) persuades him to further elaborate on his collusion with Simone Martin (Sandrine Holt) and the Russians.

Dante tells her of a secret code — "Darwin loves Bitcoin" — the use of which is an emergency signal meant to alert Gromov's agents to dissolve their network.

Saul (Mandy Patinkin) presents a plan to Keane (Elizabeth Marvel) which pushes legal boundaries: to broadcast the code by compromising Twitter's servers, and violate the privacy of U.S. citizens by tracking who posts confirmations in response to the tweet.

He calls his handler, "Mirov" (Merab Ninidze), to request aid in breaching the hospital and killing Dante, but is only told to stand down.

After learning that Dante is dead, Carrie has a psychotic break at the hospital as she is overwhelmed by thoughts of what she nearly did to Franny, as well as flashbacks to the deaths of Brody, Aayan and Quinn.