Major Emmerdale spoilers follow from Monday's episode (June 21).
Emmerdale has resolved the mystery of who's secretly poisoning Kim Tate.
The ITV soap revealed the culprit in Monday night's episode (June 21) after weeks of speculation over who had been targeting Kim.
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Kim's son Jamie (Alexander Lincoln) has been unmasked as the culprit in one of Emmerdale's biggest twists of the year.
Viewers were let in on the secret as Jamie had a highly revealing conversation with fellow vet Paddy Kirk (Dominic Brunt) about low supplies of diazepam at the surgery.
Related: How Emmerdale's Kim Tate poisoner revelation sets up a week of shocks
Paddy told Jamie: "It's about the drugs you've been giving your mum's horse. I had a look at the cabinet this morning and there's only one box left. You do know they should only be used short-term?
"I'm not having a go, it's just that you have been using them rather a lot recently."
Jamie replied: "Well, after today, I won't be using them anymore. It's worked well. Admittedly it's taken longer than I thought, but the diazepam has done the trick."
As Paddy walked away from the conversation satisfied, he remained completely unaware of what Jamie had really been using the drugs for.
Related: Emmerdale reveals Home Farm body bag shock in 25 new spoiler pictures
Emmerdale fans saw a mystery figure start spiking Kim's decanter of brandy in mid-April.
Kim later realised what was going on, but was unaware of who was targeting her. She then made the mistake of confiding in Jamie, unaware that she was pouring her heart out to the very person that she couldn't trust.
Earlier in Monday's episode, Kim closed in on Will Taylor (Dean Andrews) as her prime suspect as Jamie tricked her into thinking that he was to blame.
Related: Emmerdale star Claire King addresses Succession similarities in Kim Tate's storyline
The recent discovery of a secret stash of diazepam in Will's toolbox played right into Jamie's hands, as Kim refused to believe Will's claims that he takes the medication for his anxiety.
Kim later put her full trust in Jamie, promising that he'd inherit everything she has when the time is right.
Emmerdale airs on Monday, Wednesday, Thursday and Friday this week on ITV. All of the episodes are available to watch now on the ITV Hub.
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