John Dickson Carr: The Emperor's Snuff-Box (UK 2013)

From the Publisher:
The scene is a fashionable French seaside resort; the witness, Eve Neill, is looking out of her window in the early hours of the morning when she sees the battered body of her prospective father-in-law in the room opposite.

By Eve's side is her ex-husband, who has attempted to force his unwelcome attentions on her. How can Eve tell the police what she saw when disclosing whom she was with might jeopardise her own impending marriage?

Suspicion falls on casual thieves, on the family and on various acquaintances, but the complicated ‘locked-room' case is eventually solved by Dr Dermot Kinross, a detective who becomes emotionally involved...

John Dickson Carr: The Emperor's Snuff-Box. Orion Books, ISBN: 9781471905278 (December, 2013), 190 p., £18.99, eBook £7.99.

John Dickson Carr: The Emperor's Snuff-Box (USA 1995)

From the Publisher:
Beside the dead body of Sir Maurice Lawes are the shattered fragments of a snuff-box that once belonged to Napoleon. These fragments tell a tale, or rather two tales, one true and one false. Now, an English expert in criminology forces the evidence to tell the truth about what happened and to point out the real murderer.

John Dickson Carr: The Emperor's Snuff-Box. Carroll & Graf, ISBN: 0786702230 (August, 1995), 298 p., $4.95.

John Dickson Carr: The Emperor's Snuff-Box (USA 1986)

From the Publisher:
Beside the dead body of Sir Maurice Lawes are the shattered fragments of a snuff-box that once belonged to Napoleon. These fragments tell a tale, or rather two tales, one true and one false. How an English expert in criminology forces the evidence to "tell" the truth about what happened and to point out the real murderer makes for what Time called "a brilliant exercise in detecting and a chilling adventure in villainy.".

John Dickson Carr: The Emperor's Snuff-Box. Carroll & Graf, ISBN: 0881842036 (February, 1986), 298 p., $3.50.

John Dickson Carr: The Emperor's Snuff-Box (USA 1969)

From the Publisher:
NEITHER PEACE NOR QUIET
When beautiful Eve Neill divorced Ned Atwood she thought she had left scandal behind her forever. Seeking oblivion, she settled down at La Bandelette - a French watering-place catering to only the stodgiest types, mostly British. There she met the ultra-respectable Lawes family, who lived directly opposite her on the rue des Anges, and shortly afterwards her engagement to young Toby Lawes was announced. But her ex-husband Ned had other plans for Eve. He appeared at her villa late one night, nasty as ever. Across the way, old Maurice Lawes sat up in his study. "I'll just call out and let him know I'm here," Ned taunted. He ran to the window and flung back the brocade curtain. But it was too late to tell Maurice Lawes anything. He was slumped down in his chair, his head battered in. And a hand in a brown glove was closing the study door...

John Dickson Carr: The Emperor's Snuff-Box. Berkley Medallion (January, 1969), 160 p., $0.75.