This is a preloved book in very good condition. 
 
Meet the Diamond Brothers, the world's most defective detectives, by the author of the number one bestselling Alex Rider series. When a dwarf comes into the office and leaves a package, Tim Diamond, the world's worst private-detective, is faced with his toughest case yet. The office is ransacked and the package is found to contain simply a box of Maltesers. Who was the dwarf … and why was he murdered shortly after his visit?
 
Publisher: Walker Books
 
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