Natasha O'Keeffe as Lizzie Shelby Tommy's largely ignored wife, Lizzie, returns to the new series. Natasha O'Keeffe has appeared in "Misfits" and "Lip Service", and can most recently be seen in the adaptions of Robert Galbraith's (a pseudonym for J. K. Rowling) "Strike" series, as Strike's ex-girlfriend Charlotte. Image Source: Getty / Tim P. Whitby