19 - Cats Eye by R. Austin Freeman

When a lawyers brother is brutally murdered in what seems to be a botched robbery, Ms Blake, a chance witness to the horrific event, finds her life threatened as she claims to be able to identify the killer. Medico-legal expert Dr Thorndyke and Robert Anstey, the KC, are drawn into the case with dual interests – assisting Thorndyke in his investigation and simultaneously protecting the courageous Ms Blake.