The Dark Nest trilogy

Meanwhile, Tenel Ka, the queen mother of the Hapes Consortium, has become pregnant by Jacen Solo, and delays her pregnancy through use of the Force to reduce the chance of their daughter's paternity being discovered.

[3] UnuThul explains to Mara Jade that the Dark Nest is after her because it had absorbed the consciousness of the wife and daughter of Daxar Ies, a man she killed back when she was an Emperor's Hand operative.

Luke Skywalker declares himself Grand Master of the Jedi, and succeeds in unifying them to an extent, and leads an assault on the Dark Nest.

Lomi Plo meets her death at Skywalker's hand, and UnuThul is defeated by Luke as well after losing an arm.

Thul is taken in by the Jedi for psychological treatment as the Killik revert to their naturally peaceful state, no longer unified by the Hive Mind or driven by the ambitions of the Dark Nest.