"There are several television series that are so effective, they can produce compelling episodes without any dialogue at all. Silent, or dialogue-free, episodes have been a television mainstay for decades, though, even when attempted by some of the best TV shows of all time, are often a difficult trope to deliver effectively. The best examples, however, often utilize the technique to enrich their narrative.
Many television series have silent episodes which have been critically lauded. They are often praised for incorporating appropriate stories that explore the potential of silent episodes. From Buffy the Vampire Slayer to The Twilight Zone, such masterful executions of silent episodes are frequently considered among the series' best and most memorable outings."
-Richard Craig