The Raven's Revenge

In the sixth and final installment of the Blackthorn Key series, Christopher faces his greatest challenge yet as he unravels the true identity of the Raven. Accused of a terrible crime and imprisoned in London's most notorious jail, he must navigate a dangerous series of games orchestrated by the Raven. Alongside his friends, Christopher embarks on a tense pursuit across London, aiming to outsmart the Raven and finally uncover his identity in this exciting conclusion.