mystery (kellerman) - who killed the woman?

[mysterykellerman]

Hello guys!

 

Sorry if this was the wrong forum in which I post this topic but please don't close it, it's very important for me.

 

I've a little problem, I'm from germany and I read the book mystery by jonathan kellerman. But I can't remember who killed the mysterious woman.

 

Please help my, I despair in this story!

 

Thank you so much!