Kate Irving arrives at her grandfather's cottage at Frenchman's Creek in the dead of night with her young son, a small suitcase, and little else. Its scattered community of fishermen, farmers, artists, and jetsetters barely bat an eyelid, because theirs is a rarefied world, tucked beneath the lush forest that lines the banks of the Helford estuary, deep in the heart of Cornwall, where life is slow and people generally mind their own business. Unless, of course, your grandfather happens to be a pillar of the local community.

Peony Bellefleur runs Betwitching Blooms, the charming flower shop in a picture-perfect Cotswold village in England. Her flowers seem to make the sick improve, wedding days happier, and birthdays more special because she infuses her bouquets with a little magic. Peony’s a witch in a village that seems too perfect to be true. Probably because it is. She’s got her hands full between running her flower shop, managing her mother—who’s a medium with a habit of conversing with the dead wherever she happens to be—and helping her protégé to embrace her newfound powers.

A magical serial killer is stalking the Occult town of Wrackton. Hypnotic whistling causes victims to chew their own tongues off, leading to the killer being dubbed the Whistler (original, right?). Enter the Undetectables, a detective agency run by three witches and a ghost in a cat costume (don't ask). They are hired to investigate the murders, but with their only case so far left unsolved, will they be up to the task?

My life was going just fine by most standards. I ran a successful business in a tight-knit magical community, and lived just blocks from a beautiful lake and series of hiking trails. Then Selene showed up. According to some magical code I inherit my aunt's ancient familiar; a grumpy ten-pound cat with a broken filter. She fancies herself something of a saber-toothed tiger, and claims to have wrestled the thread of her ninth life from the hands of the Fates themselves—although, I'm pretty sure that last part isn't true. Almost positive.

According to legend, twin sisters Gemma and Mira are descended from witches. But they’ve never been able to use magic. On their 17th birthday, everything changes. They’re gifted with power over the elements, and right after receiving their magic, they’re tracked down and attacked by an ancient monster. They would have died, if not for Mira’s boyfriend, Ethan, showing up to save the day.