Months ago, arsonists burned Dr Damon Sinclair's laboratory Now Damon is a recluse, shut in at the top of his unfinished Sinclair Tower And at the very bottom is the affectionate Kit Snow and her cosy diner After stopping a back-alley mugging, Kit earns the gratitude of the dark knight doctor Only, she doesn't want his charity - just all of his most intimate secrets - putting her between her mysterious protector and the black marketeers seeking to pillage the Sinclair pharmaceutical empire But the only thing Damon guards more closely than his multimillion-dollar formulas is his heart