Just when you thought Wentworth couldn't get more thrilling, this week's penultimate episode will have you on the edge of your seat. In fact – it might be the best of the series to date!

With Marie Winter's (Susie Porter) sentencing appeal hanging by a thread thanks to the intervention of corrupt Director of Public Prosecutions Michael Heston (David Downer), things have become more fraught for the incarcerated crime matriarch.

She has more to lose than ever, and is determined to go to any lengths to be exonerated, including potentially risking the life of one of Wentworth's most loved inmates.

Marie knows only too well the walls are closing in. Not only have the women turned on her now they know she's the one likely responsible for Kaz's (Tammy MacIntosh) death, Vera (Kate Atkinson) makes a shock discovery.

What does she find out?