Even when done well, the penultimate flashback episode has become such an endemic storytelling strategy in TV dramas that it should be abandoned on principle. Photo-Illustration: Vulture; Photos: Netflix, Sarah Enticknap/PEACOCK There’s a pattern in TV storytelling that’s been hanging around for a long time, but it’s recently proliferated into a full-blown scourge. If you’ve watched almost any streaming dramas in the past several years, you’ve likely seen at least one or two examples. It goes