A tired and emotional Grace asked her sister if she could pick up something from her flat before they caught their flight home.
All she wanted was something to remind her of BFF Molly.
She was surprised to hear Molly's voice as she opened the front door.
Until she found Roz tearfully watching old videos of her and Molly together.
It soon became clear that Molly and Roz had secretly been dating.
And Roz couldn't deal with the fact that Molly was falling so hard for Prince Theo instead.
She couldn't face seeing Molly loving somebody else!
Roz knew that Luc had accidentally killed Jessica Marshall and used this as leverage to force him to murder Molly.
The pieces of the puzzle all fell in to place for Grace. Roz had taken both Luc and Molly from her!
And she saw red!
Overcome with anger and pain, Grace brutally attacked Roz.
A horrified Natalie walked in on Grace, covered in blood, sitting over Roz's lifeless body.
We're still in shock!