Tricia Sullivan

Charlie is a dreamhacker, able to enter your dreams and mould their direction. Forget that recurring nightmare about being naked at an exam - Charlie will step in to your dream, bring you a dressing gown and give you the answers. As far as she knows, she's the only person who can do this. Unfortunately, her power comes with one drawback - Charlie also has narcolepsy, and may fall asleep at the most inopportune moment.
But in London 2022, her skill is in demand. And when she is hired by a minor celebrity - who also happens to be the new girlfriend of Charlie's lamented ex - who dreams of a masked Creeper then sleepwalks off a tall building, Charlie begins to realise that someone else might be able to invade dreams...