The Belgian boy reporter with the fluffy white dog appears to finally have found a scrape he can’t get out of. Tintin, the unlikely comic book hero whose adventures have been delighting children and adults around the world for 75 years, has emerged from retirement for one final adventure, culled from the notes of his creator, Georges Remi, who died in 1983 before he could finish the book. The final installment, which has already sold 400,000 copies in France, is classic Tintin in every way but one: the end of the story appears to leave the hero doomed.