The diversity of these two paired episodes (numbers 35 and 36) make this a choice disc, even for non-fans of the series. "The Doomsday Machine" is a kind of space-borne adaptation of Moby Dick -- the Enterprise encounters the disabled starship Constellation, whose captain (William Windom) is the only survivor of an encounter with a huge, planet-killing weapon that is threatening the most populated part of the galaxy. With Kirk trapped aboard the stricken Constellation when the planet-killer hits again, Windom's Commodore Decker seizes command of the Enterprise from Spock and moves to attack the machine. The other episode, "Wolf in the Fold, takes place not in deep space but on an alien planet, Argelius, where Chief Engineer Scott appears to have been responsible for a series of savage murders of women. Its story is as claustrophobic as "The Doomsday Machine" is wide-ranging and expansive, offering a nice counterbalance in tone and subject, and the show also presents a creepy sci-fi twist to a decidedly 19th century tale. Both programs look good, but "The Doomsday Machine, whose special effects were excellent for 1967, seems even more impressive from the new digital transfer -- the planet-killer seems genuinely eerie and huge, though this is one script that you sort of wish had been done as a feature film in order to present the illusion of the full size of the machine. The sound also adds to the virtues of this disc; the volume level is slightly lacking, though it pumps up well, but the dark, ominous tone of the musical score is emphasized, which adds to the sense of doom and destruction aboard the wrecked starship. The menu set-up is easy to use and the chapters are very convenient.