01E21 - Cliffhanger

Having learned that Cabe lied (albeit it to protect him) about their first vital mission in Iraq, where thousands were killed with his software, Walter refuses to have anything to do with his Homeland mentor anymore. He stands by hat decision, even if it means Cabe being sidelined by his director and the team being discarded by the government, its main and indispensable employer. Team members resign or attempt to change Walter's mid, to no avail, and blame him for considering working (alone) for tycoon Richard Elia instead. Ralph is down as he can't be around the team anymore but escapes from school when he hears that Walter is in trouble during his last team mission, in a nuclear reactor out of control.