Ask a Bengali horror fan what got them hooked on audio stories and one answer comes up again and again: Sunday Suspense. The format is simple on paper. Classic stories, full cast, sound effects, music. But the execution is what turned casual listeners into devotees.
The trick is pacing. A Sunday Suspense style episode does not rush. It builds the room before it builds the scare. You hear the rain, the door, the footsteps, long before anything actually happens. By the time the ghost shows up, your nerves are already gone. Most imitators skip this part. They jump straight to the screaming. That is why they do not hit the same.
Then there is the voice acting. One narrator doing every character in different voices is fine for a bedtime tale. But a full cast, with a proper villain voice and a proper victim voice, makes the story feel like it is happening in your room. It is theater, not reading.
Sound design does the heavy lifting nobody credits. A creak at the right second is worth a paragraph of description. The best episodes use silence like an instrument. Three seconds of nothing, then a whisper. Your brain fills in the monster, and your brain is scarier than any effect.
Of course the format has a weakness, and fans will admit it over tea. When every episode follows the same recipe, you start predicting the scares. The real ones still surprise you though. That is the difference between copying the style and understanding it.
If you like this format, look for episodes with complete metadata before you press play. Knowing the runtime and the cast up front saves you from the classic trap: a great story that ends mid-climax because the upload was cut. A proper catalog, like the one at shunogolpo.com, lists duration and series info so you know what you are getting into.