"A Tale of Two Apprentices" is an unproduced episode of Star Wars: The Clone Wars. It was adapted into Star Wars: Darth Maul: Son of Dathomir #2, the second release of Legacy. It was released as such on June 18, 2014.
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!