I am not generally a fan of writers making use of another author's characters. While I have enjoyed more than a few modern takes on, say Sherlock Holmes, more often, we wind up with something like Scarlet, the unworthy followup to Margaret Mitchell's brilliant Gone With The Wind. Mr. Timothy: A Novel succeeds largely because in Dickens' original, Tiny Tim is little more than a caricature, a sort of cherubic plot point with a crutch. Building on our shared memory of "God bless us, every one!" Bayard shapes Timothy into a fully realized character—one that fascinates and, yes, makes us care.