Question: What Role did Ashleigh Cummings play in the Australian drama television series based on Kerry Greenwood's novels?

Context paragraphs:
Secret City (TV series): Secret City is an Australian drama television series that aired on Foxtel's Showcase.  The six-part miniseries is based on the novels "The Marmalade Files" and "The Mandarin Code" by Chris Uhlmann and Steve Lewis.  The series is written by Belinda Chayko, Matt Cameron, Marieke Hardy, Alice Addison, Tommy Murphy, Kris Mrksa, and Greg Waters.  It is produced by Joanna Werner.

Miss Fisher's Murder Mysteries: Miss Fisher's Murder Mysteries is an Australian drama television series.  It was first broadcast on ABC on 24 February 2012.  The series is based on author Kerry Greenwood's novels and was created by Deb Cox and Fiona Eagger.  "Miss Fisher's Murder Mysteries" revolves around the personal and professional life of Phryne Fisher (Essie Davis), a glamorous private detective in 1920s Melbourne.  The first thirteen-part series was filmed over a six-month period in and around Melbourne from July 2011 and each episode had a budget of A$1 million.  The drama has been bought by broadcasters in 120 countries and territories worldwide.  A second series was commissioned in August 2012 and filming began in February 2013.  The series began airing from 6 September 2013 and concluded with a Christmas special on 22 December 2013.  A third series was commissioned in June 2014 and began airing on 8 May 2015.

Janus (TV series): Janus is an Australian drama television series screened on the Australian Broadcasting Corporation in 1994 and 1995.  Two series were produced, with a total of 26 episodes.

Sweat (Australian TV series): Sweat is an Australian drama television series created by John Rapsey and produced by Barron Entertainment in association with the Australian Broadcasting Corporation in Perth.  The show aired on Network Ten in 1996 for one season of 26 episodes and centred on students at an Australian school for the athletically gifted.

The Alice: The Alice was an Australian drama television series created by Justin Monjo and Robyn Sinclair.  It was set in the central outback city of Alice Springs.  The program began as a successful TV movie, "The Alice", that later spun off a regular series.  The series proved less popular and was cancelled by the Nine Network on 28 September 2005 after a sharp decline in its ratings.  The entire series and original TV movie have since been released on DVD.

List of Miss Fisher's Murder Mysteries episodes: "Miss Fisher's Murder Mysteries" is an Australian mystery drama created by Deb Cox and Fiona Eagger.  The series is based on Kerry Greenwood's Phryne Fisher Murder Mystery novels.  It premiered on ABC, a public television network, on 24 February 2012 with the pilot episode "Cocaine Blues".  "Miss Fisher's Murder Mysteries" focuses on the personal and professional life of Phryne Fisher (Essie Davis), a private detective in 1920s Melbourne.  The first season consisted of thirteen episodes, the second season was thirteen episodes long, including a Christmas special.  A third series, consisting of eight episodes, was commissioned in June 2014 and began airing from 8 May 2015.

Tomorrow When the War Began (TV series): Tomorrow When the War Began is an Australian drama television series based on the "Tomorrow" series by John Marsden, produced by Michael Boughen and Tony Winley and executive produced by Matthew Street and Kim Vecera.  The series, which consisted of six one-hour episodes, premiered on ABC3 on 23 April 2016, and covered roughly the events of the first novel, "Tomorrow, When the War Began".

Ashleigh Cummings: Ashleigh Cummings (born 11 November 1992) is an Australian actress.  She was born in Saudi Arabia and moved to Australia with her family when she was twelve.  Cummings joined a performing arts school where she learned dance and acting, before appearing in "" in 2007.  After making appearances in "Green Fire Envy" and the soap opera "Home and Away", Cummings was cast as Robyn Mathers in "Tomorrow, When the War Began".  The film, based on the book of the same name, earned Cummings a nomination for Best Young Actor at the 2010 Australian Film Institute Awards.  In 2012, the actress began co-starring in ABC1's "Miss Fisher's Murder Mysteries" as Dorothy Williams for three seasons.  That same year, she was cast in the new television adaptation of "Puberty Blues".

Phryne Fisher: Phryne Fisher ( , "FRY-knee"), often called "Miss Fisher", is the main character in Australian author Kerry Greenwood's series of Phryne Fisher detective novels.  Phryne is a wealthy aristocrat and private detective who lives in St Kilda, Melbourne, in the late 1920s.  With the assistance of her maid Dot, and Bert and Cec (who are wharfies, taxi drivers and red raggers), she solves all manner of crimes as a quintessentially Australian construction.  Phryne is no ordinary aristocrat, as she can fly a plane, drives her own car (a Hispano-Suiza) and sometimes wears trousers.  However, while displaying bohemian panache, she manages also to maintain style and class.

Sam Parsonson: Sam Parsonson (born 1989) is an Australian actor.  He made his television debut at the age of 17 on the Channel Seven Australian drama, "headLand".  He went on to appear in the critically acclaimed Australian drama series "Love My Way" for two seasons.  His performance in the role of Dylan earned him a nomination for a Logie Award for Most Outstanding Young Talent in 2007.  His other television credits include "All Saints" and children's television series "Double Trouble".

Supporting paragraphs: Ashleigh Cummings Miss Fisher's Murder Mysteries
Answer: Dorothy Williams