There’s a certain kind of movie buff who lives to discover minor continuity foul-ups in motion pictures. Is Carole Lombard‘s cigarette ash now a quarter-inch long when it was half an inch just a moment ago? Is William Powell‘s martini glass now full when it was nearly empty in the last shot?

Some film fans rush right to IMDb.com to register these flubs as soon as they spot them, but to be honest, we find this particular hobby of little interest and are happy to leave it to those who enjoy it.

But every now and then, even we spot an incongruity that warrants a raised eyebrow and presents a mystery to be solved. Watch the video below for just such a cinematic puzzle, this one discovered in the 1948 Bette Davis picture, Winter Meeting.