Show 491: Jack the Flipper, 20th April, Udderbelly Festival, South Bank, London

In Victorian Billingsgate, a fish-obsessed serial killer lurks the streets. But who is it? Sergeant Carmichael and Inspector Tewksbury investigate everyone, including themselves, but the true identity is, of course, the last person anyone expected. Featuring The Showstoppers’ first homage to Disney’s “Frozen”.