Arks of Omen: The Lion.

The Arks of Omen saga finally comes to a close in Arks of Omen: The Lion, as Vashtorr the Arkifane assembles his Key-fragments and begins a ritual of cataclysmic proportions. The Dark Angels are hot on his heels, hungry for vengeance for the assault on the Rock, but even they can’t predict what they’ll find when information extracted from a traitor leads to the far reaches of the galaxy.