Star Trek VI: The Undiscovered Country

Capt. James Kirk (William Shatner) and the crew of the USS Enterprise are carrying Klingon Chancellor Gorkon (David Warner) to Earth to negotiate a peace treaty with the United Federation of Planets. The ship appears to fire on a Klingon vessel, and Gorkon is killed in the subsequent confusion. Kirk¬†and the ship’s doctor, Leonard McCoy (DeForest Kelley), are arrested for murder, leaving Spock (Leonard Nimoy) to figure out who is behind the attack and save the negotiations.