Mission to Jabba's Palace (Death Watch)

In 20 BBY,Dathomirian Sith Lord Darth Maul traveled to Jabba's Palace on Tatooine with his brother and the Death Watch leader Pre Vizsla to form an alliance with Jabba Desilijic Tiure.

The mission
The aim of the mission was to meet with Jabba Desilijic Tiure, whom they had briefly seen in a hologram on Nal Hutta. In addition to this, the Hutt set his bounty hunters on them when he initially refused to ally with them. The refusal resulted in a skirmish in which a fellow member, and friend, of the Hutt Grand Council was killed by Savage Opress.

Darth Maul had Vizsla mobilize his soldiers, then travelled to Jabba's fortress on Tatooine with his brother and Vizsla along with them. As the ships neared the palace, Death Wach soldiers flew out and shot at the soldiers stationed at the entry, causing minor damage to the palace itself.

Maul, Opress and Vizsla cut through the entry and made their way to "speak" with Jabba. When they met with the crime lord in his audience chamber, Vizsla and Maul gave the one last chance to ally with them. Jabba merely laughed and spoke Huttese, and TC-70 told them that Jabba would join them.

Aftermath
As the Death Watch helped with the cleanup of the palace, Maul and Vizsla then finalized their plans for taking Mandalore. Maul told Vizsla that he had one more crime syndicate to get, the Fortiure kajidic.

Vizsla then left Maul, and spoke with Bo-Katan. He stated that once Mandalore was in their grasp, the two brothers would lie dead with the Duchess.