Of Mites and Men (S04E16)

Allison (Salli Richardson-Whitfield) is almost positive that she has fully recovered from Beverly's attack, but Carter's (Colin Ferguson) overprotective attitude, though sweet, isn't helping. Even worse, Senator Wen (Ming-Na) refuses to reinstate Allison as interim director of Global Dynamics, further undermining her confidence. When Carter discovers that the Astraeus mission's construction mites are devouring the very structure of GD, can Allison rise to the challenge? Clueless about the crisis unfolding, Jo (Erica Cerra), Fargo (Neil Grayston), Holly (Felicia Day) and Parrish (Wil Wheaton) find themselves locked up together in isolation, a surprise psychological stress test for the mission. As the four embark on task after bizarre task, tempers - and temperatures - heat up after Zane (Niall Matter) gatecrashes the test and Larry (Christopher Jacot) tweaks the chamber's settings to gauge their reactions. A sudden accident makes the candidates realize that this is no longer a test: they are in very real, very immediate danger. Despite their frustrations and hostility with each other, they must form a cohesive team fast - or die. (iTunes)