The Corronheld Passing

There are places where truth is, literally, a two-edged sword. And it cuts both ways.

Abducted, taken to a near-cousin world, she is to be made into a weapon of destruction. Wrapping himself in duty and grief, he turns a blind eye to the resident nature of the coming darkness. Then the Passing is triggered. The lives of all past rulers flood into the wrong person. Now both of them, and all that they hold dear, are in peril. Yes, there is magic to be practiced in this place, but the cost is tragically high.