Damian Lewis, Paul Giamatti Damian Lewis, Paul Giamatti

After three seasons as Nicholas Brody on HomelandDamian Lewis is heading back to Showtime. The Emmy winner is joining Oscar nominee Paul Giamatti in the cable network's new drama pilot Billions, where the two actors will play dueling leads.

Billions is set in the world of Wall Street, where U.S. Attorney Chuck Rhodes (Giamatti) and hedge-fund mastermind Bobby Axelrod (Lewis) butt heads while billions of dollars are on the line. The pilot will shoot in New York in early 2015.

Fall TV popularity contest: Which new shows won you over?

Lewis' involvement must make Showtime happy, as the network coveted the actor during his stint on Homeland and reportedly did everything it could to keep the Brody character alive, despite the creators' original plan to kill him off in Season 1. [Spoiler alert] Brody was ultimately killed in Season 3.

For Giamatti, Billions marks a rare television commitment. The Sideways actor is best known for roles in films such as American Splendor, 12 Years a Slave and Cinderella Man, but he also won an Emmy for the HBO miniseries John Adams and recently appeared in a short arc on Downton Abbey.

What do you think of this casting?

VIDEO: Relive The Good Wife's greatest elevator scenes:

The Good Wife's best elevator scenes