USA Today Bestselling Author Liz Gavin offers all four novels in the Knight's Edge series in one boxed set you cannot put down.These romance novels feature rock stars and their sassy ladies struggling with darkness from their pasts and angst in their present; but finding love and healing in their future.Follow Tristan, Noah, Aidan, and Duke as they blaze their way to rock and roll stardom.Swoon as they prove themselves worthy of their sassy ladies.Cheer...