Kirk and Dr. McCoy were arrested and tried for the murder, and sentenced to life imprisonment on the penal colony Rura Penthe. Valeris also provided Kirk's log entries from the Enterprise to the Klingon co-conspirators to further implicate Kirk. The Enterprise was ordered back to Earth, but Spock ignored orders and initiated an investigation aboard the ship. He discovered evidence which linked Valeris to the conspiracy, despite her best efforts to sabotage the investigation. The Enterprise then entered Klingon space, masquerading as the freighter Ursva and rescued Kirk and McCoy. Spock mind melded with Valeris and learned more about the conspiracy, including details of the Bird-of-Prey and names of those involved. Captain Sulu aboard the USS Excelsior provided Kirk with the new location of the peace conference, and the two ships warped to Khitomer in order to prevent a second assassination of the Federation President and the new Klingon chancellor, Azetbur.