When Verity sees a weird semi-visible figure, her brother John tells her it is a harmless Lurker. But Lurkers feed on human imagination and this one is using John to become more solid and independent. When Verity discovers the Lurker's secret plan, she must fight to save her brother's mind. This is a story of strange and dangerous beings.
Used availability for Charles Butler's The Lurkers
October 2006 : UK Paperback