Emmerdale star Lawrence Robb has revealed details about a pivotal “critical moment” ahead for his character Mackenzie Boyd as he uncovers the truth about John Sugden.

The soap’s antagonist possesses a twisted hero complex, deliberately placing people in perilous situations before stepping in at the eleventh hour to appear as their rescuer.

In an attempt to conceal his crimes, John allowed GP surgery patient Owen Michaels to perish and framed him for Nate’s death.

His extensive catalogue of offences has remained hidden until now, but Mackenzie is poised to make a startling revelation in forthcoming episodes, reports Leeds Live.

Cain Dingle (Jeff Hordley) becomes anxious when DC Cole requests a discussion regarding the inquiry into his son Nate’s killing.

Cain informs John (Oliver Farnworth) that fresh evidence has emerged in the investigation surrounding Nate’s murder, leaving a panicked John to process this latest twist.

The police’s renewed questioning about his death reignites Cain and Tracy Robinson’s (Amy Walsh) anguish over losing Nate.

Yet when the removal company arrives, Tracy grows suspicious about Nate’s supposed relocation after showing the worker a photograph he fails to recognise, whilst Mack stumbles upon a crucial piece of evidence that transforms everything.

Discussing the unexpected plot development, Lawrence revealed: “It changes the entire outlook entirely. It’s quite a critical moment for Mack.

“It is a mic drop moment. Suddenly Mack is like ‘Oh! you are actually…. I was right about you the whole time.'”.

When asked if the evidence he uncovers could put him at risk, the actor confirmed: “One hundred percent yes. There’s no two ways about it. This evidence puts him in a dangerous position”.

“Look, there’s certainly a chance Mackenzie has the capability to bring John down.