President Frank Underwood (Kevin Spacey) is the face of House of Cards’ political intrigue

President Frank Underwood (Kevin Spacey) may be the face of House of Cards, but his ruthless, unerringly loyal chief of staff, Doug Stamper, is its soul. Played by Michael Kelly, Stamper has been doing Underwood’s dirty work since the show began, when his boss was merely a congressman. Now, five seasons later, Underwood is in the…