Complex sentence: Sookie acts as a mediator between these two groups and it turns out that these murders and disappearance were caused by another pack lead by Priscilla Herbert, sister to Patrick Furman right hand man.
Split into simpler sentences: Sookie acts as a mediator between these two groups. It turns out that these murders and disappearance were caused by another pack lead by Priscilla Herbert, sister to Patrick Furman right hand man.