What are our favorite booksellers' favorites this week?

For this new favorite, Pierre Derensy and Sabine Agraffel have chosen an offbeat thriller, with "The Guardian Angel," written by the Italian Léo Giorda. This is the first volume in a series translated into French. It follows a schoolteacher who becomes a private detective, working with a police officer, as they attempt to solve a murder case. "The unique thing is that the drug heightens the detective's senses and develops his powers of deduction," says Pierre Derensy. "It's a very funny novel, thanks to this baroque character, in which we discover Rome differently. The police investigation also holds up, making this book a light and airy novel, perfect for summer reading." A thriller novel aimed at an adult audience.

“The Guardian Angel” by Léo Giorda, Gallmeister editions. Price: 19.90 euros.

"I dedicate my silence to you," Mario Vargas Llosa for La Mandragore

Vargas Llosa's latest, "I Dedicate My Silence to You," is one of La Mandragore's favorites. "It takes place in Lima, Peru. We are in the midst of Lima's popular musicians and singers." Carried by a rather crazy, but very endearing character, the musicologist Tono Azpilcueta, "it's a rather colorful and warm book about the somewhat underprivileged people of the city." The author offers a glimpse of "this popular, musical culture." "Under the pretext of an investigation into music, we discover a whole sociology and simple people, but beautiful people, I found that very good."

"I Dedicate My Silence to You" by Mario Vargas Llosa, published by Gallimard. Price: 23 euros.

“The Dream Lives of Baroness d’Oettingen,” Thomas Snégaroff for Les Ruelles

"The author, a journalist, finds in the drawers of his great-grandfather's desk, drawings signed by François Angibaud, the pseudonym of the Baroness." He begins researching this woman. "We are somewhere between an imaginary novel and a historian investigating the destiny of this very romantic woman during the Great War," explains Marie-Pierre Mazeau-Janot. This Baroness transformed "the destiny she had imagined." Muse, patron, artist, she captivated 20th-century Montmartre. "She supported, intoxicated, encouraged. She was a free woman at the beginning of the 20th century."

"The Dream Lives of Baroness d'Oettingen" by Thomas Snégaroff, Folio editions. Price: 9 euros.

“The Green Earth”, by Ayroles (screenplay) for Les Bullivores

"It's very, very beautiful." At Les Bullivores, we're captivated by "The Green Land." "It takes place at the end of the Middle Ages, in Greenland. We follow the adventures of Richard, an Englishman who wants to land there to create a kingdom. It's a bit like a chronicle of Richard III, it's very Shakespearean." Upon his arrival, Richard discovers a very hostile land, with the Inuit living very close to nature, and the descendants of the Vikings "who are fighting a bit against the elements." "He arrives and sows a bit of discord between the different peoples. At the same time, he also comes with a bishop—he sows discord to better reign." The result: "Intrigues that take place in the Middle Ages, but which are ultimately very current." "It's really very gripping, you can't put it down, it's superb." He is the screenwriter of "The Fourth Indies" which was also very successful when it was released. "What's more, we meet historical figures!

"La terre verte" by Ayroles (script), Tanquerelle (drawing) and Merlet (colors), published by Delcourt/Mirages. Price: 34.95 euros.