Jack Retired MMA champion "Lucky" Jack Valentine has been obsessed with music artist Penelope Mayfield from afar for years. He never expects to match up with the lovely songbird when he goes online to find a fake girlfriend for a Halloween ball at a posh country estate. Penny is far sweeter than the honeyed voice and mouthwatering curves of his fantasies, but there's trauma hidden beneath her sunny disposition. Fate might have brought them together but earning her trust will be the hardest fight of his life. Penny Penny Mayfield has been a wanderer for years, landing in Ireland to finally finish her book on folk music. She no longer performs in public; that desire died with her music partner and best friend. All she wants is to have some casual fun on Halloween but one look at dangerously sexy Jack Valentine and "casual" flies out the window. Jack is silent, surly and way too intense, but he makes her crave things she stopped wishing for a long time ago. When their magical night at the ball is over, Jack makes it crystal clear he won't settle for anything less than her whole heart. Will Penny risk letting him in, or will his nightingale fly away?