In Arabic "rais" means leader
In Hebrew ""raz" means secret
R'as comes from both of those words.

Virgil explained in the previous episode that kevin came to him of the night of evie's disappearance and told him everything about patti. Virgil told him he had to die to get rid of her and kevin took the cinder block and rope and tried to kill himself but evie's departure caused the earthquake that drained the creek…

Pregnant is more likely, but she deserves herpes.