At the height of the London blitz, Dr Lennox Collins, pioneer of the new forensic science, is enlisted by DI Wilkins after prostitute Mary Williams is strangled and a swastika carved on her tongue.
Overview：At the height of the London blitz, Dr Lennox Collins, pioneer of the new forensic science, is enlisted by DI Wilkins after prostitute Mary Williams is strangled and a swastika carved on her tongue.
