Ella Matthews 
KNIGHTS TEMPTING_KINGS KNI2 EB [EPUB ebook] 

A knight’s enemy Becomes his closest ally…Knight Theo Glenville will do whatever it takes to discover who’s plotting against his King. So befriending—and even romancing—his target’s middle daughter, Medea, is merely part of his sworn duty. But what isn’t? Falling under the spell of a woman who’s anything but plain in his eyes! Yet every day they become closer, the more torn he is between his allegiance to king or his heart…