Game of Spies (Spies in Love #2)
Pamela Mingle

Gavin Cade is on a mission. Tasked with spying on the Queen, he’s found the perfect woman to help. Sweet, shy Isabel is an easy target for his charms. Before he knows what’s happened, he is the one beguiled. With the fate of England in the balance, he must keep his plan to expose the treasonous queen a secret, or he will never seduce his sweet English rose.
Because there’s one thing he’s learned about Isabel Tait…she’s got a backbone of steel and may never forgive him.