Jane Kanwhistle leaves ten thousand pounds from her estate to her nephew, Frederick Corder--provided that he commit a different crime each and every day for a year, and avoid prosecution and imprisonment.

In The Bell Street Murders, Evelyn Merivale had helped the police solve the murder of her friend, Wilfrid Ralston, who'd invented a process to revolutionize the motion picture industry.

When Adrian Rissole is murdered in his London flat, leaving all of his money to his beautiful neighbor, Jane Lovejoy, Scotland Yard Inspector Combridge immediately suspects her and her husband.

Four distinguished historians of Asian science examine the creation of some remarkable early scientific instruments.

And then, piece by patient piece, the little solicitor begins fitting together the shadowy pieces of this complex series of crimes.

When the blackmailer Henry Coldwater is murdered, Basil Forbes becomes the prime suspect, since he admits having thrashed Coldwater an hour before his death.

Post-mortem evidence finds traces of a rare dental anesthetic in her body, and her stepdaughter and heir, Ada, becomes the prime suspect, since she works in a dental office with her fiance.

Wilfrid Ralston's new invention will revolutionalize the film industry.