In the dark, hidden corners of the Mausoleum, Dinah begins to understand the true nature of Vincent's sacrifice for her. But she must confront her innermost emotions if she plans on setting free the spirits that have been locked away. As time quickly disappears in the sleepy town of Bizenghast, the riddles become more complex and intricate - and their answers may be in the choice Dinah is forced to make between the lost souls and her closest friend......

Adrift and in despair, Dinah with have to fight to keep her sanity, keep her life together and keep all hell from breaking loose in the Mausoleum! The town of Bizenghast holds many secrets, and Dinah will have to grow up and grow strong if she intends to seek out the truth behind the mystery. Hatred and murder underlie the very foundations of the town, and Dinah's struggle is only just beginning...

Armed with the first of the four tower guards, Dinah and Vincent set out to solve the rest of the Mausoleum's riddles, which prove more difficult as the journey progresses. The deceptive puzzles of Bizenghast's Graveyard lead the children to an ancient seaside to stop a drowned girl's murderous rampage. Later, they travel through Bizenghast's early past to rid the woods of a festering plague-carrier. And finally, they come face to face with the mysterious...