About four years ago, the sun simply stopped shining. Liesl has been locked in her attic by her step-mother ever since her father died, over a year ago. One day, a ghost appears, and her world is tipped upside down.
It's a simple fairy story, with simple (and somewhat two-dimensional) secondary characters - evil step-mother, doting (and dead) father, and an assortment of other good or evil characters that assist or obstruct the girl's mission to return her father's ashes to his desired resting place. Liesl herself is a fairly bland little girl - which is not to say she is unlikeable or boring, simply predictable.
Po is, for me, by far the stand-out character in the cast. Its forays from The Other Side to the living world and back again are fascinating for me, and its initial reluctance to assist Liesl is overcome (and friendship is achieved) in a very natural and organic way.
Although not hugely original - the greatest magic of them all, of course, turns out to be something all of us have experienced - it's a sweet, easily read book, with just enough scares. A boy, a girl, two ghosts, an adventure - what more could you possibly want?