The Unseen4 books in series
It Begins Publisher's Summary
Out walking alone one rainy night, Lucy becomes convinced that someone - or something - is following her. Spooked, she ducks into a cemetery to try and lose her stalker. Panicking in the darkness, she slips and stumbles into an open grave - only to discover she is not alone in there…. Lucy manages to escape, but she doesn't get away unscathed. She begins having terrifying visions and dreams - and she still can't shake the feeling of an unseen presence, always watching, waiting…. Who was the girl in the grave? And what has she done to Lucy?