Sum 41's Deryck Whibley vouches his memoir is '100%' true after ex-manager's denial that he 'groomed' and 'sexually abused' ...

Whibley recently published his memoir, 'Walking Disaster,' which alleges Sum 41's former manager groomed him at 16 ...

"If you think I'm a liar, there's only one way to settle this," Whibley said. "Under oath, in front of a judge" ...

Sum 41 frontman Deryck Whibley claims his former manager coerced him into a sexual relationship in his new memoir “Walking ...

Deryck Whibley of Sum 41 is opening about the sexual abuse he allegedly suffered during his relationship with the band's ...

In his memoir 'Walking Disaster,' Whibley accused Nori of sexual assault and grooming while the front man was a minor. Nori ...

In the book, Whibley, 44, claimed that in the band’s early days, he was groomed and sexually and verbally abused by Nori. He ...

Sum 41’s Deryck Whibley is issuing a challenge to Greig Nori after the Treble Charger frontman denied the singer’s claims ...

Sum 41 frontman Deryck Whibley accuses former band manager Greig Nori of sexual abuse and grooming in his new memoir, ...

My Life Through Heaven and Hell,' Sum 41's Deryck Whibley claims the alleged abuse began when he was 18 and lasted until the ...

The Sum 41 singer makes a public challenge to his former manager to have the truth proven under oath in a court of law.

In the short clip, Whibley said he stands by his allegations that Nori coerced him into a non-consensual sexual relationship as a teen.