Skirmish aboard the Coronet

In 21 BBY, Jedi Knights Obi-Wan Kenobi and Anakin Skywalker were sent to escort Duchess Satine Kryze and several senators to Coruscant so the Duchess could defend herself against the claims that she was in league with the Confederacy of Independent Systems. During the trip, the Duchess's ship, the Coronet, was attacked by the Death Watch, which was aided by the Confederacy. As clone troopers searched the ship for anything that might threaten the Duchess, they were attacked by numerous assassin probes and probe killers, which killed the clones Mixer and Redeye. Though the probes were eventually defeated, Skywalker and Kenobi had strong suspicions that there was a traitor aboard the ship. Kenobi used one of the probe killers to reveal the traitor, by presenting the probe to each of the four senators in turn. While the probe was hostile toward three of them, but remained calm around Tal Merrik, Kenobi revealed Merrik to be the traitor. Escaping Kenobi's attempted arrest, Merrik contacted Pre Vizsla via hologram. Vizsla sent three Droch-class boarding ships filled with B2 super battle droids to attack the Coronet so Merrik could escape with Kryze as his hostage. Skywalker, the clone troopers, and Satine's guard held off the droids, while Kenobi pursued Merrik through the ship. After defeating the droids, Skywalker killed Merrik, who had threatened to destroy the ship and everyone aboard. The Coronet made it safely to Coruscant, where several more assassination attempts were made against the Duchess.

Text and facts from the “Skirmish aboard the Coronet/Legends” article on Wookieepedia, licensed under CC BY-SA 3.0. Modified for this site.