'Halt and Catch Fire' episode 4 pics: Why does Cameron look so sick?

mackenzie-davis-halt-and-catch-fire-ep-4.jpgIt has not exactly been easy street for the central characters on "Halt and Catch Fire" thus far, but Sunday's (June 22) episode brings a fresh calamity.

How bad is it? Bad enough to make Cameron (Mackenzie Davis) look seriously sick, as you can see in the first of Zap2it's two exclusive photos from episode 4, "Close to the Metal."

AMC describes the episode this way: "As Cameron nears completion of the BIOS, a crisis threatens the project's future and requires all hands on deck to save the machine."

Maybe there's a light at the end of the tunnel, though: Joe (Lee Pace) looks considerably happier in the pic below, and he's holding what looks like the BIOS binder.

lee-pace-halt-and-catch-fire-ep-4.jpg"Halt and Catch Fire" airs at 10 p.m. ET/PT Sunday on AMC.

Photo/Video credit: AMC