In 2006, she played the Moors murderess Myra Hindley in the television film "Longford". Set between 1967 and 1997, the film depicts the relationship between the child murderer and Lord Longford, the politician who spent years campaigning (ultimately unsuccessfully) for her release. "Longford" was a critical success and premiered with 1.7 million viewers. Morton, however, was severely criticised by the relatives of the children who were killed by Hindley and Ian Brady, but she insisted, "It is my duty as a performer to raise issues [...] we're afraid to look at". She received a Best Supporting Actress nomination at the 59th Primetime Emmy Awards, and won at the 65th Golden Globe Awards.