Les cousins Karlsson - Mystère sur l'île aux Grèbes

A single-volume mystery from Éditions Thierry Magnier, Les cousins Karlsson - Mystère sur l'île aux Grèbes (2020) launches a series of island-set adventures with the Karlsson cousins. This debut issue introduces the young detectives as they investigate a strange occurrence on Grèbes Island, blending a light, contemporary tone with classic children's-mystery charm. The book stands out for its clean, expressive art and its focus on family dynamics and outdoor exploration.