Star Trek: Enterprise Season 1 Episode 11
When the Enterprise comes in contact with an alien vessel transporting stargazers to observe a spectacular stellar event, Archer invites them aboard the ship not realizing that Silik, a Suliban enemy, is among them. Archer quickly realizes that Silik is engaged in a nefarious time-travelling mission and must stop him before he can tamper with the course of history.
Serie: Star Trek: Enterprise
Episode Title: Cold Front
Air Date: 2001-11-28