The Hanged Man Rises by Sarah Naughton (author) (UK edition)

When their parents are killed in a fire, Titus Adams and his little sister Hannah are left to fend for themselves in the cruel and squalid slums of Victorian London. Taking shelter with his friend and saviour, Inspector Pilbury, Titus should feel safe. But although the inspector has just caught and hanged a notorious child-murderer, the killings haven’t stopped. Now everyone is a suspect, even the inspector himself. Unless Titus can find a way to stop the culprit, he will lose all that is dear to him. For this is an evil that cannot be contained – not even by death itself.