Fast paced as per usual. Am a bit surprised that we have elves, goblins, and... apparently we have fae as well. Huh. Oh, and Fomorians. The latter were banished millennia ago by what turns out to be Ian's ancestor...who wasn't human. Nobody's sure how Ian feels about that. Ian isn't saying though. Ian would have remained in the dark so to speak about his ancestry if the bad guy hadn't left a little trinket that lit up like the Bat signal when he picked it up.
Of course, the bad guy is trying to get a curse lifted that Ian's ancestor placed on the Fomorians, and to do that, he's gotta remove Ian.
Much investigating ensues, with Rake declaring his intentions to Mac just prior to the latest war to stave off Armageddon. Of course the good guys win.