It's taken years, but Portia Adams has found an outlet for her obsessive curiosity as the consulting detective of 221 Baker Street, like her grandfathers before her. Scotland Yard taps her for their trickiest crimes, she's in her last year of law school and finally things are heating up between Portia and her downstairs tenant, Constable Brian Dawes. But a bomb planted at a crime scene destroys everything she has fought so hard to establish.