London, 1932.
D.I. Waterstone arrives at Bookseller Row - a narrow alleyway in the West End famed for its bookshops - to examine the dead body found there. The D.I. soon discovers the victim was a property developer who planned to level Bookseller Row to build luxury apartments.

It appears every shop keeper on the street had motive to murder him, but who committed the crime? Put yourself to the test and follow the story, working your way through a whole host of challenges - deciphering clues at crime scenes and searching for hidden pieces of evidence in the beautifully illustrated pages - to satisfy your inner detective. Can you step into the Detective Inspector's shoes and crack the case?