The Nightwatchmen (Hodder Modern Classics)

Josh and Caleb are no ordinary tramps. An air of mystery surrounds them. Henry is fascinated and tries to piece together what they do and what their strange allusions to 'ticking' and 'Greeneyes' mean. Henry gradually wins their confidence and is allowed into their secret world where the everyday and the magical blend seamlessly. He is finally able to help Josh and Caleb make their getaway and escape on the night train. Helen Cresswell weaves a tale that will have you mesmerised and guessing right until the last page. First published in 1969.