S03E17 — The Mark of Gideon

About this episode

The Mark of Gideon is season 3, episode 17 of Star Trek: The Original Series, first aired on 17 January 1969.

In series order, the previous episode is S03E16 — Whom Gods Destroy and the next is S03E18 — The Lights of Zetar. By original air date, the previous episode is S03E15 — Let That Be Your Last Battlefield and the next is S03E14 — That Which Survives.

Browse every episode in Season 3.

More from Star Trek: The Original Series

• S03E14 — That Which Survives
• S03E15 — Let That Be Your Last Battlefield
• S03E16 — Whom Gods Destroy
• S03E18 — The Lights of Zetar
• S03E19 — The Cloud Minders
• S03E20 — The Way to Eden