If you’ve ever engaged in an all-night Netflix binge of the political thriller House of Cards, you are aware that main character Frank Underwood often pauses to talk directly to the viewer. This breaking of the fourth wall is part of what makes the series so compelling, as we get deeper insight about Underwood’s master plan before he even puts it in motion.

Kevin Spacey, the man who plays Frank Underwood, appeared on The Late Show with Stephen Colbert this week and was posed the question: who exactly is Frank talking to, other than literally the camera crew?

Spacey has a very specific answer. In fact, it’s just one person. One name. You may be surprised with who it is.