Around one minute and 35 seconds into this episode, Dick is talking to one of the murder mystery game actors, a big game hunter who wears a monocle. When Dick goes to shake his hand, his monocle falls out! You need to be paying close attention to noticing it, as it's on the actor's 'far' eye as he stands in profile, and the falling monocle is only in view for a few frames (not too fast to need frame-by-frame to see it or anything, though).