Published Dec 1974 by Marvel.
Cover pencils by Gil Kane and John Romita (alterations), inks by Tom Palmer and John Romita (alterations). "The Corridor," script by Tony Isabella (co-plot) and Chris Claremont (script), pencils by Dick Ayers, inks by Frank Springer; John Kowalski, in Dr. Bock's body, helps Bock's family escape Poland during the German advance.