When the best-laid plans go awry in Linda Cajio's delightful, tantalizing romance, a highly unsuitable match leads to an unlikely love connection.   Devlin Kitteridge is proud to be the black sheep of the family. But as the last unmarried grandchild, he's the favorite target of his matchmaker grandmother--and the only way to end her constant meddling is to set her up with someone of her own. Someone like Marshall Rayburn, the man she was engaged to more than sixty years ago, who is now a widower--and the grandfather of a very pretty, proper, and eligible bachelorette.   Hilary Rayburn doesn't need to spend an evening with the impossibly arrogant Devlin to know that he's bad news--no matter how handsome he may be. And yet his plan to reunite lost lovers is too good to pass up. Hilary and Devlin will pretend they're a match, bring their grandparents together, and watch the magic happen. But after getting one sweet taste of trouble with her partner in crime, Hilary can't help wondering whether they should turn their charade into a reality.