After Dr. Laurience transfers minds between himself and Dick Haslewood, Haslewood-now in Laurience's body-slams his restraint chair against the wall of his transfer booth, thereby shattering the glass, to effect his escape from the incoming gas. Moments later, however, when Clare and the police return Dick and the doctor to their respective chambers for mind re-transference, that booth is once-again intact and undamaged.