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Miranda Otto (m. 2003)
In the 1980s, O'Brien played a regular role in short-lived soap opera Starting Out (1983), then had guest roles in Carson's Law in 1983 and Prisoner in 1984 and appeared in The Henderson Kids. He was then cast as Shane Ramsey, a regular original character in soap opera Neighbours on the Seven Network in 1985. He became one of the serial's most popular cast members, continuing in the series until 1987. He then played a leading regular role in drama series The Flying Doctors from 1988 until 1991.
In 1994, O'Brien sent up his soap opera star past by taking a regular role in Psycho Ward 10, a soap opera parody in The All New Alexei Sayle Show.
O'Brien took on the role of surgical registrar Mr. Cyril "Scissors" Smedley in the popular BBC series Cardiac Arrest through the second and third series between 1995 and 1996.
O'Brien has appeared in numerous mini-series, including The Day of the Roses and Through My Eyes (the story of Lindy Chamberlain). He has also guest starred on numerous television series, including Halifax f.p.. For his work, O'Brien has won Australian Film Institute and Logie Awards. He also appeared as Carl Morgan in Spellbinder: Land of the Dragon Lord, and he appeared in the 1998 Australian/Brisbane comedy television series of Minty. In 2009 he played Sydney underworld figure and racing identity George Freeman in the series Underbelly: A Tale of Two Cities.
O'Brien was part of the cast of BBC Television series Casualty as a new consultant called Stitch. He also appeared in ITV police drama The Bill in which he played corrupt Detective Inspector Peter Cavanaugh.
He later reprised his role as George Freeman in the follow up in the Underbelly series the Golden Mile.
O'Brien has won several acting awards in his career. He won two Logie Awards - one in 1987 for the 'Most Popular Actor' (for his role in Neighbours) and one in 2003 for the 'Most Outstanding Actor' (for his role in White Collar Blue).
|1983||The Mortal Coil|
|1984||Prisoner Cell Block H||Tim Carter||1984|
|1985-1987||Neighbours||Shane Ramsay||290 episodes|
|1986-1991||The Flying Doctors||Capt. Sam Patterson|
|1991||The Trials of Oz||James Anderson||BBC dramatisation of the 1971 trial|
|1993||Taggart||Bill Hamilton||1 Episode|
|1994||The All New Alexei Sayle Show||Dr Scott Jordan||Regular cast member, series 1|
|1995–1996||Cardiac Arrest||Mr. Cyril "Scissors" Smedley||Regular cast member, series 2 & 3|
|1996||Hotel de Love||Norman Carey|
|1997||The Day of the Roses||Boris Osman|
|1999||Queer as Folk (UK version)||Cameron Roberts||Regular Cast Member|
|1999||Sabrina Down Under||Dr. Julian Martin|
|1999||Sally Marshall Is Not an Alien||David Lawson||Supporting Cast Member|
|1999||See How They Run||Don Morton/Cassidy|
|2000||The Knock||Glen Vaughan||4 episodes|
|2000–2001||Water Rats||Matthew Grierson||3 Episodes|
|2001||Relic Hunter||Allan Devaut||1 Episode|
|2002||Young Lions||Daryll Flynn||1 Episode|
|The Pact (novel)||Roy Folksdale|
|2002–2003||White Collar Blue||Det. Joe Hill||Main Cast Member|
|2003||Code 11-14||Det. McElroy|
|2004||Through My Eyes: The Lindy Chamberlain Story||Ian Barker Q.C.|
|The Bill||DI Peter Cavanaugh||6 Episodes|
|2005||Blue Heelers||Dr. Peter Nelson||2 Episodes|
|Hell Has Harbour Views||Tim Sullivan|
|2006||The Return||Terry Stahl|
|Nightmares and Dreamscapes: From the Stories of Stephen King||Keenan|
|Fatal Contact: Bird Flu in America||Alan|
|2007||Gossip Girl||Photographer||1 Episode|
|Casualty||Theo 'Stitch' Lambert||18 Episodes|
|2008||City Homicide||Warren Endicot||1 Episode|
|2009||Underbelly: A Tale of Two Cities||George Freeman||10 Episodes|
|A World Away||John|
|Doctor Who||Ed Gold||1 Episode|
|X-Men Origins: Wolverine||John Howlett|
|Rogue Nation||John Stephen Jr|
|All Saints||Sam Whittaker||1 Episode|
|30 Seconds||Bill Brooker||Regular Cast Member|
|2010||Underbelly: The Golden Mile||George Freeman||3 Episodes|
|Dance Academy||Sebastian||2 episodes|
|2012||Miss Fisher's Murder Mysteries||René Dubois||1 episode|
|2013||Love of My Life||Surgeon/Thomas|
|2014||The Killing Field||Inspector Lachlan McKenzie||TV Movie|
|2015||Winter||Detective Inspector Lachlan McKenzie||TV Series|
|2016||Battlefield 1||Frederick Bishop||Video Game|
|2018||What Still Remains||The Prisoner||Post production|
- Peter O'Brien moves from Underbelly to Rogue Nation
- Neighbours veteran bags Casualty role
- O'Brien fits The Bill
- Peter O’Brien lands Doctor Who special
- "Miranda Otto marries in cathedral lock-out". The Sydney Morning Herald. Australian Associated Press. 2 January 2003. Retrieved 5 August 2019.
- Staff writers (5 August 2019). "Miranda Otto biography". Tribute. Retrieved 5 August 2019.
- "Episode Seven - Murder in Montparnasse - Episodes & Video - Miss Fisher's Murder Mysteries - ABC TV". ABC Online. Retrieved 22 November 2014.