Georges Simenon’s lugubrious detective Maigret has appeared in umpteen screen adaptations and dozens of actors have played him. Now it’s Gérard Depardieu’s turn. Depardieu’s Maigret isn’t, in fact, quite how I imagined Maigret. He’s bulkier than the one in my head; moves more cumbersomely, like a sad circus bear. And I never saw him with