During a press conference at the Van Gogh Museum in Amsterdam in November 2018, the author of this book revealed that one of the two known photographs of the painter Vincent van Gogh was in fact of his brother Theo. The series of events that led to this unexpected discovery is full of yet- unpublished anecdotes, fascinating encounters and twists worthy of a thriller.

Following this first revelation, Yves Vasseur established contact with the descendants of Samuel Delsaut, who discovered two dr...