Cox, Phil Roxbee.

Who stole the black diamond? follow the clues to unravel the mystery / [written by Phil Roxbee Cox ; photographed by Sue Atkinson]. - London : Usborne, c1995. - 48 p. col. ill. ; 25 cm. - Usborne solve it yourself .

Cover title.

Readers follow a trail of clues on each page in an attempt to find the black diamond thief.

ISBN: 0746020538 (pbk.)

Subjects--Topical Terms:
Mystery and detective stories.
Picture puzzles.