In the book, Whibley, 44, claimed that in the band’s early days, he was groomed and sexually and verbally abused by Nori. He alleges that the grooming began when he was 16 and Nori — who’s also the frontman for the Canadian punk band Treble Charger — was 34.

My Life Through Heaven and Hell,' Sum 41's Deryck Whibley claims the alleged abuse began when he was 18 and lasted until the band fired his purported abuser in 2004.

Deryck Whibley has accused Sum 41 ‘s first and former manager of emotional and verbal abuse. According to claims outlined in Whibley’s new memoir, “Walking Disaster, My Life Through Heaven and Hell,” the frontman was groomed and sexually and verbally abused by Greig Nori during the first stages of Sum 41’s career.