An all-new steamy and angsty billionaire arranged marriage romance from the USA Today & Wall Street Journal bestselling author, Tracy Lorraine.As the daughter of a powerful businessman, I wasn't expecting to inherit much when my father suddenly passed.There was only one thing I truly wanted.The cottage- the only place that ever felt like home.But it turns out that I got a lot more than I bargained for.Kingston Callahan.Arrogant, egotistical, power-hungry, demanding and all the other not-so-charming attributes I despised.He's also my brother's best friend.And now, thanks to my dearly departed father, my husband for the next year.He's everything I hate about the life I was born into. Everything I'm not.One short year...three hundred and sixty-five days in return for the life I've always dreamed of.It's a merger, not a marriage, but I'm not prepared for the hunger Kingston uncovers with his touch.It'll all be over soon, just so long as I remember not to catch real feelings for my fake husband while we're pretending.Dear reader, By His Vow is a standalone enemies to lovers, brother's best friend romance set in the Callahan Billionaires world.