Click here for the full Episode List Title Production # Original Air Date Mission Stardate Season Three Spock's Brain ST:TOS 61 09-20-68 5431.4 The Enterprise Incident ST:TOS 59 09-27-68 5027.3 The Paradise Syndrome ST:TOS 58 10-04-68 4842.6 And the Children Shall Lead ST:TOS 60 10-11-68 5029.5 Is There In Truth No Beauty? ST:TOS 62 10-18-68 5630.7 Spectre of the Gun ST:TOS 56 10-25-68 4385.3 Day of the Dove ST:TOS 66 11-01-68 Unknown For the World is Hollow and I Have Touched the Sky ST:TOS 65 11-08-68 5476.3 The Tholian Web ST:TOS 64 11-15-68 5693.2 Plato's Stepchildren ST:TOS 67 11-22-68 5784.0 Wink of an Eye ST:TOS 68 11-29-68 5710.5 The Empath ST:TOS 63 12-06-68 5121.0 Elaan of Troyius ST:TOS 57 12-20-68 4372.5 Whom Gods Destroy ST:TOS 71 01-03-69 5718.3 Let That Be Your Last Battlefield ST:TOS 70 01-10-69 5730.2 The Mark of Gideon ST:TOS 72 01-17-69 5423.4 That Which Survives ST:TOS 69 01-24-69 Unknown The Lights of Zetar ST:TOS 73 01-31-69 5725.3 Requiem for Methuselah ST:TOS 76 02-14-69 5843.7 The Way to Eden ST:TOS 75 02-21-69 5832.3 The Cloud Minders ST:TOS 74 02-28-69 5818.4 The Savage Curtain ST:TOS 77 03-07-69 5906.4 All Our Yesterdays ST:TOS 78 03-14-69 5943.7 Turnabout Intruder ST:TOS 79 06-03-69 5928.5 Episode information from startrek.com