Episode 51 Bounty
Captain Archer is now wanted by the Klingons and bounty hunters are after him. Archer gets tricked and captured by a Tellarite and turned over to the Klingons. The Klingons shortchange the Tellarite so the dude lets Enterprise know where Archer is so he can be freed. This adds some nice layering to Klingons being enemies but the later season payoff was a bit weak.
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