The Riddle of the Disappearing Dickens

Dublin & London 1859: A Tale of Two Cities
Bram Stoker: boy seeking adventure (and things to write about)
Molly Malone: part-time fishmonger and full-time sneak thief!
Best friends Molly and Bram are on a mission in London.

Famous writer Charles Dickens has been kidnapped!
The pals set out to search the darkest corners of the city. On their travels, they meet all sorts of characters, among them a foul-mouthed fowl and a Worshipful Company of Fishmongers.
Can they solve the riddle of the disappearing Dickens before it's too late?