At Gaston's grave, Lupin and Jigen encounter Camille Bardot, an ex-investigator with a phenomenal photographic memory and an old acquaintance of Gaston. After receiving a telephonic challenge from Albert, the three of them find themselves targeted by a number of assassins. Mortally wounded, Bardot reveals that he aided Gaston in copying the original black notebook in the hopes that, at the right time, justice could be served against the perpetrators, but in turn they were ruthlessly hunted by DGES director Guillaume for it. Realizing that Albert set him up to gain possession of the notebook, Lupin returns to Paris to challenge him; but despite his precautions, Albert gets the drop on him, shoots him severely, and recovers the notebook.