Kersen immediately looked a bit distressed, as if he didn't want to pull up the memories. But... he did.

"I was guilty," he said quietly, not quite looking at her. "There wasn't much point in arguing otherwise, it was just a matter of my sentence. The magister was apparently feeling... creative. Decided that rather than the typical five years underground, he though that appropriate restitution for taking a vampire life was to make another. They forced me to turn a girl. Against her will."