He may be her fiercest ally…or a scoundrel waiting to betray her. Johanna Templeton is on a life-and-death quest. Swept into an intrigue that rivals the tales she pens, she joins forces with a Highland rogue to find the treasure that will save her kidnapped niece—a prize the Scot seeks for reasons that have nothing to do with ransom. Engaging the Highlander in a sizzling battle of the sexes, Johanna shields her heart. Connor MacMasters, spy for Queen Victoria, is a man on a mission—keep a legendary gemstone from an evil man. Trailing an American novelist who holds the key to the treasure should’ve been simple, but Johanna awakens feelings he’d long thought dead. Torn between duty and desire, he wants her in his bed, but loving her would be a fool’s game. Blasted shame his heart doesn’t agree.

A Highlander’s vow...Scottish spy Gerard MacMasters never expected to be playing bodyguard in his mission to catch a killer. Stunning English beauty, Lady Evelyn Hunt, has witnessed a merciless assassin’s escape—now, she’s in danger, and it’s up to him to keep her alive. Yet, he is drawn to the tempting woman. Passion flares, but he knows better than to fall for her. He’s already lost one woman he loved—never again will he put his heart on the line. She shields her heart...After a crushing betrayal at the altar, Lady Evelyn wants nothing to do with love. Kissing a gorgeous rogue is one thing, but surrendering her heart is another matter. When she stumbles upon a mysterious crime, nothing prepares her for the dashing Scot who charges into her life. The hot-blooded Highlander may be her hero—or her undoing.

Highland spy Harrison MacMasters knows a pretty face can hide bitter deception. Once, he’d been drawn to Grace Winters and the temptation in her kiss. Now, he knows better than to trust her with anything, including his heart. But now he’s forced to watch over the one woman he hoped to never see again. Grace Winters will do anything to keep her sister safe, even if it means stealing the Crown Jewels themselves. But when she’s caught in the act, she’ll need to make a bargain with the devil to keep herself from the gallows and her family from the poorhouse. Too bad the one man she gave in to temptation with years ago now controls her fate.