Storm Echo by Nalini Singh

Silence has fallen. The Psy are free to feel emotion. Free to love. But Silence was never a prison for Ivan Mercant.
The biggest threat to his future lies dormant in his brain – a psychic monster that wants only to feed. And now, the brutal leash he’s kept on that monster is slipping. He prepared for this day, for the end of Ivan Mercant . . . but that was before he met Lei.
As primal as she is human, this wild changeling brings colour into his life, laughter to his soul. Then the dream shatters in a rain of blood, in silent bodies in the snow. Lei is gone. Vanished without a trace . . . until Ivan meets strangely familiar eyes across a busy San Francisco street.
Soleil Bijoux Garcia is a healer who has lost everything. She exists in a world of desolate aloneness . . . until the day she finds herself face-to-face with a lethal stranger. The animal who is her other half knows this man, but her memories are tattered fragments. Sorrow and a need for vengeance are all that drive her. Her mission? To kill the alpha of the DarkRiver leopard pack.

But fate has other plans. Soon, a deadly soldier who believes himself a monster and a broken healer might be all that stand between life and death for the entire Psy race. . .