At the end of the episode when Maigret returns to the village train station to go back to Paris, as the scene ends the camera pans to a shot of some wooden crates on the platform that clearly contain oysters (the top crates are open, showing oysters on ice). This is a bit of ironic humor, as Maigret has repeatedly tried to sample the "famous" local seafood during his time there, but has not been successful, much to his disappointment. However, the identical crates of oysters are present and in exactly the same position on the platform when Maigret arrives from Paris. The camera doesn't focus in on them, but they're clearly visible.