Ryan Molloy (Frankie Valli), Jon Boydon (Tommy Devito), David McGranaghan (Nick Massi), Edd Post (Bob Gaudio), Nicola Brazil (Mary Delgado), Will Barratt (Bob Crewe), Stuart Milligan (Gyp De Carlo), Ben Jennings (Joey), Jake Samuels (Norm Waxman), Lucy Martin (Lorraine), Rebecca Jayne Davies (Francine), Mark Halliday (Billy Dixon), Tommie Earl Jenkins (Hal Miller), Chris Gardner (Hank Majewski)