Season 2, Episode 16
Production episode: 2×17
Original air date: January 5, 1968
Star date: 3211.7
Enterprise is assigned to check on the automatic communications and astrogation stations on an uninhabited planet, Gamma II. Kirk, Uhura, and Chekov are all set to beam down when they abruptly disappear from the transporter pad without the usual shining and whining beam effect. Scotty’s a miracle worker, but even he isn’t good enough to work the transporter without touching the controls—he has no idea what happened, or where they are. Spock is dubious.