During her time in the US, Mullany travelled the country reporting on Donald Trump's first term as president and the chaotic 2020 election. On the ground in Minneapolis, she witnessed first hand the violent demonstrations after George Floyd's killing and the confronting reality of the Covid-19 pandemic through the eyes of NYC paramedics, earning her recognition as Foreign Correspondent of the year.
While based in California, Mullany was at the centre of the worst mass shooting in American history, reporting live from inside the Mandalay Bay Hotel during the Las Vegas massacre. Her body of work includes breaking news on manhunts in Canada, cartel murders in Mexico and drug smuggling rings in South America. From the courtroom, she filed on the high profile trials of cartel kingpin El Chapo, disgraced film producer Harvey Weinstein, sex trafficker Ghislaine Maxwell and Wikileaks founder Julian Assange.
In 2023, she was among the first journalists on the ground in Israel in the wake of the October 7 attacks and has reported extensively on the expanding war in the MIddle East. As Europe Correspondent, she played a key role in the network's coverage of the Queen's death and King Charles' reign.
Prior to her career in broadcasting, Mullany was a journalist at News Corp, working for the company's The Sunday Times masthead in her hometown Perth, Western Australia, and Sydney's The Daily Telegraph, reporting on politics, crime and national security.