CORONATION Street paedophile Megan Walsh is set to be exposed in an explosive week on the cobbles.

The twisted teacher – who is played by actress Beth Nixon in the ITV soap – has been grooming and abusing Will Driscoll since before he arrived in Weatherfield last year.

Her sickening abuse was uncovered by Sam Blakeman and she soon set about manipulating and terrorising him into silence.

But now with Sam reaching breaking point, the full devastating truth will be exposed.

Coronation Street has released a brand new promo which reveals an explosive turn of events as the devastating truth about Megan’s dark nature as a manipulative predator is finally revealed.

The storyline intensifies following a terrifying ordeal with Sam, prompting Leanne to launch an investigation that ultimately uncovers Megan’s relationship with Will and her calculated campaign of bullying to silence Sam.

With Megan’s secrets exposed and desperate to protect Will, Ben and Eva take matters into their own hands and race against time to gather hard evidence.

With the truth finally out, will Megan face the consequences or will she attempt to spin one last lie?

Or with Ben, Eva, killer Maggie and a no doubt revenge seeking Leanne Battersby hunting her down – will Megan become the murder victim next month?

Meanwhile another paedo villain is making a shock comeback to the cobbles.

Trisha Marlow will make her shock return to the cobbles this spring.

The mysterious woman was revealed to be a paedophile, who groomed Tim Metcalfe when he was a teenager, taking his virginity in a shock storyline last year.

Actress Anita Booth is reprising her role this spring as Tim finally confronts her about what she did to him.

The storyline will put Tim, played by Joe Duttine, and wife Sally, actress Sally Dynevor, back at the centre of soap.

A source said: “Trisha has already caused so many problems for Tim and Sally.

“Tim doesn’t believe he was groomed despite Sally trying her best to make him see that he was.”