Darth Maul: Son of Dathomir
Cover for Volume 1 and summary:
Getting cut in half by Obi-Wan Kenobi and being rejected by his former Sith master Darth Sidious isn't going to defeat Darth Maul. In fact, it only makes him mad enough to take on the galaxy—with an army of Mandalorians!
Cover for Volume 2 and summary:
"With his Shadow Collective army stalled, Darth Maul calls on Mother Talzin for help and is sent reinforcements—the deadly Nightbrothers! Maul is ready again to take on the Separatist droid army, Count Dooku, and General Grievous—in a trio of simultaneous battles!"
Cover for Volume 3 and summary:
"Darth Maul has captured Darth Sidious's new apprentice! Mother Talzin and Maul attempt to sway Count Dooku to their cause, revealing surprising facts about Maul's past. But an attack by an elite Jedi strike force throws everyone's plans into chaos!"
So...seems to me like either Maul>Dooku, or Talzin helps subdue the Count.