I'm totally down with Pandora on why, knowing full well who Dean was, Saleh would allow him to lay in the morgue for days as someone unidentified. There is so much stench of foulplay only a moron would not be suspicious.
When you block a person, they can no longer invite you to a private message or post to your profile wall. Replies and comments they make will be collapsed/hidden by default. Finally, you'll never receive email notifications about content they create or likes they designate for your content.
Note: if you proceed, you will no longer be following .