An Emmerdale spoiler for next week's episodes show that a "shocking discovery" is to be made about villain John Sugden. The notorious Dales killer appeared to murder Mackenzie Boyd on Thursday night's episode (August 21) in a gory showdown. ‌

John will once again be hiding all evidence and covering up Mack's disappearance, as he has with previous victims. But is he finally about to be exposed? ‌

According to a new spoiler for next Friday's episode , August 29, John's husband Aaron Dingle is set to make a "shocking discovery". Not only that, but Aaron will confront John about it, accusing him of being "a liar". ‌

So what has Aaron found out, and what could be so "shocking" that would spark this reaction from Aaron? Spoilers don't reveal what it is, but Aaron is seen gazing at

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