Avril Lavigne was a punk pop sensation who topped the charts in the early noughties, and she still performs to sold-out crowds today. But what if the Avril we’ve been following all these years is not the same Avril we fell in love with? What if — as a curious theory claims — Avril was replaced by a look-alike at the height of her fame? In ‘Who Replaced Avril Lavigne” comedian Joanne McNally searches far and wide — from Avril’s hometown to the underbelly of the internet — to find out if the rumours are true. Along the way, she immerses herself in a mind-bending world of fake celebrity deaths, doppelgangers, conspiracy theories, and downright absurdity.

Who Replaced Avril Lavigne? Joanne McNally Investigates is produced by What’s The Story Sounds – for BBC Sounds and CBC.