Lily Fair by Kimberly Cates

A dark prophecy.
A knight of betrayals.
A love caught between faith and fate.

It was foretold that Caitlin of the Lilies would one day bring about the downfall of the powerful Irish chieftain, Conn. To thwart destiny, Conn banishes her to a distant convent, promising she will one day be wed. When a proud warrior arrives to escort her home, Caitlin dares to hope he is her long-awaited bridegroom—until she awakens with his sword at her throat.

Niall of the Seven Betrayals has sworn fealty to Conn, who dangles before him the promise of restored honor. Charged with escorting Caitlin, Niall believes his mission to be mundane—until he learns he has been honed into the perfect weapon to end her life.

Yet Caitlin’s courage and defiance pierce through Niall’s hardened heart. Torn between loyalty and love, he must face an impossible choice: kill the innocent maiden who trusts him, or betray his king and sacrifice all hope of redemption.