The Wizard in Black - M N Jolley - Bog

There's a killer on the loose, and he's gunning for wizards. No defense has been able to slow his attacks. Not even the most watchful guard has managed to see their approach. When he kills one of the Thirteen, a decorated veteran whose identity was supposed to be a secret, the crisis is elevated to a state of emergency.David knows he might be the next, but he's not content to hide and wait for things to blow over. Instead, he's going to do whatever he can to find the killer and bring them to justice, even if that means crossing every line to do it.