James Wolk has joined the cast of 'Shameless.' That sound you hear? It's every TV critic falling off their chair.

Wolk will play Adam, an investment executive who forms a connection with Emmy Rossum's character, Fiona. He'll appear in multiple episodes during Season 2 Showtime dramedy.

Viewers may remember Wolk as the star of the short-lived and critically acclaimed 'Lone Star.' Fox canceled the drama about a man living a double life after two low-rated episodes, despite the critical acclaim.