Do you think Rob will kill again??

Yes if a character decides to leave soon. They might make that character be a murder victim after finding out the truth.

However if no character wants to leave or isn't axed then no.

It would ruin robs character even more. They could get away with keeping him after just one murder but he would probably have to be sent down if he murders again.

they will probably go down now that route now.

Someone will find out, he will kill them to keep them quiet and then there will be a hostage situation. This sonario has been done so many times I'm sure one more won't hurt I think I would stop watching altogether if it did.