Catherine Doyle is the co-author of YA fantasy rom com series Twin Crowns with Katherine Webber. She grew up in the West of Ireland by the sea and is the author of the YA trilogy Blood for Blood and the award-winning and magical middle grade Storm Keeper's trilogy.

Katherine Webber is the co-author of YA fantasy rom com series Twin Crowns with Catherine Doyle. Katherine is from Southern California and spent much of her childhood in the Palm Springs desert. Her debut YA novel was the critically acclaimed Wing Jones. For younger readers, she also co-writes the Sam Wu is Not Afraid and Sunday Times bestselling Dragon Mountain series with her husband, Kevin Tsang.