Claire threatens Frank. Frank makes a politically bold move that may provoke Russia. An event at a campaign stop changes everything.
As Frank deals with a new threat to his candidacy, Claire has doubts about their plan. Claire faces a difficult decision concerning her mother.
Frank attempts to stop Cathy from testifying. With Hammerschmidt sniffing out the truth, the Underwoods throw someone close to them under the bus.
In the wake of a surprising announcement, everything at the White House is shaken up. A decision must be made about whether to go to war.
With a military stand-off overseas and potential violence at home, Francis wants to finish off Tusk for good. Claire and Jackie Sharp collide.
Claire joins Frank as he stumps in South Carolina, but he doesn't trust her. A disastrous scandal blindsides Frank's campaign on primary day.
At the convention, Frank and his team publicly push for Catherine Durant to be chosen as his running mate, but privately pursue a different agenda.
Heather Dunbar goes for the jugular, forcing Claire to confront her worst fears. The rift between Frank and Claire widens.
The Jordan Valley erupts in chaos as Frank's campaign is picking up steam. Claire gets disturbing intel and counsels him.
Claire tries to tarnish Frank's legacy. Doug provokes Claire by releasing excerpts from Frank's diary. A rift develops between the Shepherds.