I am perfectly willing to act as business manager for the Franco-Midland Hardware Company, at a minimum salary of £500. – Mr Hall Pycroft. Hall Pycroft is a simple man, looking for a simple job.

But working for the Pinner brothers is certainly not simple.

When Pycroft finds himself caught in the middle of a troubling mystery, he turns to the only man he knows can solve it: Sherlock Holmes.