Star Trek: Enterprise (2001)

S2E7 The Seventh

Title: The Seventh Plot: Archer, Mayweather, and T'Pol journey to a frozen planet to capture a wanted criminal. However, T'Pol receives an unexpected communication from Vulcan High Command, complicating their task. As they pursue their target, T'Pol starts experiencing unsettling memories from a previous mission, leading her to question the reliability of her recollections. The mission becomes increasingly perilous as the lines between past and present blur, challenging T'Pol's understanding of her own history.