BattleTech Legends: Grave Covenant (Twilight of the Clans, #2‪)‬

TAKING THE FIGHT TO THE ENEMY...

Possessing precious secret information that will lead them down the Exodus Road, the Inner Sphere Successor States can now meet the Clans on their own terms...and behind enemy lines. The Herculean task of amassing enough power means re-establishing the legendary Star League—a union of Successor States and their BattleMechs led by Victor Steiner-Davion.

But the deadly game of politics makes the Successor Lords wary of any alliance, and with Victor's Machiavellian sister, Katrina Steiner, hatching more vicious plots to further her own agendas, the war against the Clans may only be a distraction from the real danger...