Used book – 813, The Three Crimes of Arsène Lupin, Maurice Leblanc

From cell 14, second division, of La Santé prison, Arsène Lupin must wage one of the most difficult battles he has ever faced. Deprived of all means of action, almost without contact with the outside world, he must both clear his name of the murders of which he is accused and unravel the tangled web of a most complicated affair.

Confidential letters from Bismarck, a key witness hidden under the identity of Pierre Leduc, an inscription, APOON, and a number, 813. In total, enough to ignite a powder keg in Europe, prey to colonial rivalries, at the mercy of a diplomatic incident.

Worse still: Herlock Sholmès, Lupin's old rival, has entered the fray! Everything is set for a merciless race against time, full of breathtaking twists and turns.