The other world / Murray Leinster -- Target: Berlin / George Alec Effinger -- Adept's gambit / Fritz Leiber -- Last enemy / Beam Piper -- Aristotle and the gun / L. Sprague de Camp -- There's a wolf in my time machine / Larry Niven -- Many mansions / Robert Silverberg -- Remember the Alamo! / T.R. Fehrenbach -- One way street / Jerome Bixby.