Marett has a wide international reputation for her research and scholarship is in the fields of cultural legal studies, law and humanities, and for her development of the new field of jurisprudence she's called theatrical jurisprudence. Her book, Towards a Theatrical Jurisprudence, was published by Routledge in 2019, and she has contributed landmark pieces to mark the field in the international journal Law and Literature (2018), and a chapter in the Oxford Handbook on Law and the Humanities published in 2020. Theatrical jurisprudence draws on the insights of theatre theory and practices including dramaturgy to interrogate conventional practices of legal interpretation, by turning attention to the myriad influences on that interpretation outside those boundaries - and what this means for the training of lawyers. Through deeply reading the texts of law, especially foundational judgments dramaturgically, she brings law into its time and place, to understand how lawyers interpret legal texts through time, how non-legal experience through generational change affects that interpretation, and what this means for legal integrity. Marett has been invited to guest edit special issues of journals (including the special issue 'Law and Humanities: Past Present and Future' for the Australian Feminist Law Journal) and as a co-editor of the book collection Fables of the Law, invited by Professor Daniela Carpi for the German series Law and Literature published by de Gruyter. She and her colleague Cassandra Sharp have achieved international recognition for their edited collection Cultural Legal Studies published by Routledge. Her book Legal Theories: Contexts and Practices, with Mark Thomas, is widely used in Australia and internationally.
Marett has built and maintains scholarly networks in Australia, the UK, the Czech Republic,, Switzerland The Netherlands, Germany, France, Denmark, Sweden, Italy, Hong Kong, Canada, and the US and has visited at and given presentations and talks at a range of institutions in these countries.