In the episode "Eminence" [link]
(episode) Darth Maul and Savage Opress join forces with Death Watch. Maul pulls of a string of surprisingly effective ploys, ending with a large army for Death Watch, funded by the Black Sun and Pyke spice dealers as well as bullying the Hutts into surrendering some space lanes.
Full episode here [link]
Part 1 here [link]
Part 2 here [link]