Marching into an open field, Saunders (Vic Morrow) and his men are greeted with a barrage of machine-gun fire by a wounded GI named Murfree (Roddy McDowall). Once he has downed his weapon, Murfree explains that he is on his guard against Nazi spies who, disguised as Americans, have infiltrated the Allied ranks. It turns out, however, that the baby-faced gunner is harboring a secret, which only a fellow soldier named Larkin (William Bryant) knows...and Murfree sees to it that Larkin will never tell. ~ Hal Erickson, Rovi