Dark Hour (Serpent Moon Trilogy)
One of the darkest and bloodiest stories of all time comes not from a medieval battlefield but from inside one of the most opulent palaces ever built. The strategies come not from men eager to extend their influence, but from women bent on exercising their wit and prowess in a kingdom not their own.  Treason and murder are fair game. Marriage is manipulation, a means to an end. Children are the enemy. And the days of the House of David are numbered-unless one woman can find the strength to conquer them all.