From School Library Journal

Grade 7 Up-A coded warning of imminent danger sends Sherlock Holmes and Dr. Watson to the country house of the reclusive Jack Douglas. When they arrive too late to prevent a tragic death, they must follow bewildering clues and find a murderer.
Copyright 1999 Reed Business Information, Inc.

Product Description

To the police it is a formidable case and they are grateful for the razor brain of the great detective Sherlock Holmes. There are perplexing details - wedding ring missing together with one dumb-bell, the odd behaviour of the widow and a card inscribed "VV 341" lying by the faceless body.