Which Witch is Which?. The Tony Mandolin Mysteries, #11

San Francisco's only PI who can see the things that go bump in the night is about to get bumped-hard. Twenty years ago, a little old witch named Nana hired a wet-behind-the-ears Tony Mandolin to break up a protection racket. He did. She paid him in potions that have saved his bacon more times than he can count, then vanished-along with the entire alley her shop sat in. Now Nana's back, looking exactly the same, acting like two decades is just a long weekend, and Tony's past is slamming into his present at full speed.
High-end restaurants are dropping dead patrons all over again-same deadly floral poison, same panic in the kitchens, except this time there are no demands, no blackmail, and no obvious suspects. Then a city bus gets ripped open by a very irritated, very magical, house-sized sea lion that seems to have Tony's name on its hit list. With his drag-queen-turned-business-partner Frankie, a cranky wizard who'd rather zap first and ask never, and a crime lord who just wants his favorite chefs to stop dying, Tony has to figure out which witch is which-before the next corpse on the floor is his.
Snark, sorcery, sourdough, and supernatural sea lions. Just another week in Fog City.