Heller is the frontrunner in a burgeoning subgenre which might loosely be described as Martina Cole-lite. These books are routinely characterised by the hard-faced blonde on the cover alongside paeans of praise in footballers' terminology ("played a blinder", "massive", and so forth); but, once opened, they are less visceral than Cole and contain fewer swearwords. Two-Faced is the story of twin sisters: Mia is the glamorous one who grows up to be a model, Michelle the thoughtful one who becomes a social worker. Mia treats Michelle like dirt, but Michelle repeatedly bales her out, assuming Mia's identity in order to save her. It's vivid and fairly violent, the plot implausible and the characterisation hamfisted, but, at the end of the day, it's a thoroughly gripping, one-sitting read from start to finish. Nice one, Mandasue!