Nunn was born in Swaziland and moved to Perth with her parents in the 1970s. She attended the University of Western Australia graduating with a B.A. with a double major in English and History She completed a M.A. in Theatre Studies at Villanova University in Philadelpia.  While in America she met her husband-to-be and they live with their two childrenin Sydney .
Nunn wrote and directed several short film including the documentary Servant of the Ancestors in 1998 which screened at several festivals' It won Best Documentary Silver Images, Pan African, Zanzibar Film Festival, 2000. Her first book A Beautiful Place to Die was published in 2008. Set in South Africa in the beginning of the apartheid era in South Africa it featured Detective Emmanuael Cooper. This was the beginning of the Detective Emmanuel Cooper series.
- A Beautiful Place to Die (2008) - Book 1 Detective Emmanuel Cooper series
- Let the Dead Lie (2010) - Book 2 Detective Emmanuel Cooper series
- Silent Valley (2012) also known as Blessed are the Dead - Book 3 Detective Emmanuel Cooper series
- Present Darkness (2014) - Book 4 Detective Emmanuel Cooper series
- Contributor to If I Tell You... I'll Have to Kill You (Michael Robotham editor) (2013)
- 2009 Winner Davitt Award - Best Adult Novel - A Beautiful Place to Die
- 2011 nominated Ned Kelly Awards for Crime Writing — Best Novel – Let the Dead Lie
- Highly Commenrded - Ellis Peters Historical Crime Awards - Let the Dead Lie
- 2013 shortlisted Davitt Award — Best Adult Crime Novel – Silent Valley
- 2013 shortlisted Ned Kelly Awards for Crime Writing — Best Fiction – Silent Valley
- 2013 nominated Edgar Allen Poe Awards - Best Paperback Original - Blessed are the Dead (aka Silent Valley)
- 2015 shortlisted Ned Kelly Awards — Best Adult Crime Novel – Present Darkness
- 2015 shortlisted Davitt Award - Adult Fiction - Present Darkness
- "About Malla Nunn". Panmacmillan. Retrieved 17 April 2014.
- Malla Nunn. "Malla Nunn Simon & Schuster Page". Authors.simonandschuster.com. Retrieved 2013-10-22.
- "Malla Nunn comes to town 13 September 2013". The Inverell Times. Retrieved 8 March 2017.
- "Malla Nunn Biography". Book Browse. Retrieved 8 March 2017.
- "Servant of the Ancestors 1998". Screen Australia. Retrieved 8 March 2017.
- "art + soul Jo-anne McGowan Producer". ABC. Retrieved 8 March 2017.
- "A Beautiful Place to Die An Emmanuel Cooper Mystery". Simon & Schuster. Retrieved 8 March 2017.
- "Shortlist for the 2013 Davitt Awards". Aust Crime Fiction. Retrieved 8 March 2017.
- "Mystery Writers of America 2013 Awards" (PDF). The Edgars [Mystery Writers of America]. Retrieved 8 March 2017.
- "Announcing the 2015 Ned Kelly Awards Shortlist". Aust Crime Fiction. Retrieved 8 March 2017.
- "Keeping up with the 2015 Davitt Awards - Adult Fiction". Aust Crime Fiction. Retrieved 8 March 2017.
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