Dido Twite is waylaid by her father, the shady Abednego Twite, acting on instructions from his evil patron.Why is Dido so urgently needed in Wapping? Why are King Richard's friends all accidentally drowning in the Thames?How does hard-drinking Mrs Lily Bloodvessel figure in this intricate plot, with her cellar full of sleeping guttersnipes?Another rollercoasting story by Joan Aiken, in which Dido's scheming Pa finally receives his comeuppance.