You’ve never met the other wives. None of you know each other, and because of this unconventional arrangement, you can see your husband only one day a week. But you love him so much you don’t care. Or at least that’s what you’ve told yourself.

But one day, while you’re doing laundry, you find a scrap of paper in his pocket—an appointment reminder for a woman named Hannah, and you just know it’s another of the wives.

You thought you were fine with your arrangement, but you can’t help yourself: you track her down, and, under false pretenses, you strike up a friendship. Hannah has no idea who you really are. Then, Hannah starts showing up to your coffee dates with telltale bruises, and you realize she’s being abused by her husband. Who, of course, is also your husband. But you’ve never known him to be violent, ever.

Who exactly is your husband, and how far would you go to find the truth? Would you risk your own life?

And who is his mysterious third wife?

About the author: Tarryn Fisher is a New York Times and USA TODAY bestselling author of nine novels. Born in Johannesburg, South Africa, she immigrated to America with her parents at the age of thirteen. She spent the next eighteen years in South Florida, where she earned her degree in Psychology. A sun hater, she currently makes her home in Seattle, Washington, with her children, husband and psychotic husky. Tarryn writers about villains and loves connecting with her readers on Instagram (@TarrynFisher, 58k followers). Visit her at TarrynFisher.com for more information, or check out her fashion blog at GuiseOfTheVillain.com. Tarryn is a Slytherin.