Langdon joined the
Nine Network after completing her journalism degree, which included an
internship with
CBS in
New York City. She began her media career as a producer for
Nightline in 2001. In 2002, Langdon worked as a producer for the 6:00pm bulletin of
National Nine News. Seeking more on-the-road experience, Langdon moved to Nine's
Darwin newsroom and, in her first year in the
Top End, won the David Marchbank Award for best new journalist. Alongside her round as political reporter for the
Northern Territory, Langdon travelled to
Mexico and
East Timor covering stories for news and the
Sunday program. Langdon was one of the first Australian journalists on the ground following the
Australian Embassy bombing in
Jakarta in September 2004. She filed daily for all of Nine's bulletins. In 2008, Langdon released her first book;
The Child Who Never Was: Looking for Tegan Lane, which examined the murder of newborn infant Tegan Lane by her mother
Keli Lane. In 2011, she became a reporter on the
Nine Network's
60 Minutes program. In December 2017, Langdon was appointed co-host of
Weekend Today, replacing
Deborah Knight. She continued to work as a reporter on
60 Minutes and a fill-in presenter on
Nine News Sydney and
Today. In November 2019, the Nine Network announced that Langdon will host
Today with
Karl Stefanovic from January 2020. In 2021, Langdon was announced as the host of the brand new Nine Network entertainment parenting program titled
Parental Guidance. She returned to the show for a second season which premiered in 2023. In November 2022, Nine Network announced that Langdon was appointed as the host of
A Current Affair, replacing
Tracy Grimshaw from 2023, with her role on
Today taken over by
Sarah Abo. At the
Logie Awards of 2024, Langdon won Best News or Public Affairs Presenter for her work on
A Current Affair. This was her first individual Logie. In her acceptance speech, Langdon acknowledged her late father-in-law
Mike Willesee, the first presenter of
A Current Affair. In
2025, she was nominated for an award for a Gold Logie owing to her work on
A Current Affair and Channel 9's broadcast of the
2024 Paris Olympic Games. ==Personal life==