About Cassandra

I am a researcher in the School of Law at the University of Sussex and co-founder and trustee of the Treebeard Trust.

I specialise  in coercive control and the criminal law. I advise governments and activists around the world on the doctrinal implications of domestic abuse law reform, and through the Treebeard Trust support transformative initiatives to empower women affected by violence .  

Treebeard Trust



30 - 31 July 2020
LAUNCH OF the International Coercive Control Law Network

Legal strategy for criminal justice reform coming soon http://iccln.org

'A woman wears the same outfit every day, rarely goes out, and continually paces back and forth in a small space. Imagine how hard it would be to explain her behaviour if you were unable to reveal that the woman is confined in a jail cell….Start with the cage, and everything changes.'

Evan Stark

Illustration: Natalie Lees

Research Publications

Cassandra Wiener

‘From Social Construct to Legal Paradigm: the New Offence of Coercive or Controlling Behaviour in England and Wales’


Marilyn McMahon and Paul McGorrery, (eds) Criminalising Non-Physical Family Violence: Coercive Control and Autonomy Crimes (Springer International)

Cassandra Wiener

‘Seeing What is Invisible in Plain Sight: Policing Coercive Control’

The Howard Journal of Crime and Justice

Book Release

  • reviews the different ways legal systems around the world are criminalising coercive control

  • contributing chapters on the cc framework (Evan Stark), the pioneering Scottish approach (Marsha Scott) and the English section 76 Serious Crime Act (my chapter)