From the Maitland Mercury report:
Toni Collette spotted on set at Maitland Gaol -
Historic Maitland Gaol was closed to the public this week for filming.
The staff were very tight-lipped about the mysterious project, simply saying it was for a television program. Within days of the closure international star and Australian actress Toni Collette was spotted on set at Maitland Gaol.
Full article available at Maitland Mercury, June 24, 2016.