This quest was marked obsolete by Blizzard and cannot be obtained or completed.
Find out more about Reethe from Adjutant Tesoran in Theramore.
I don't recognize the name of Lieutenant Paval Reethe. Your best bet would be to check with Adjutant Tesoran. He keeps track of all the records for the Theramore guard, from personnel to their equipment.
He should be able to tell you who this Reethe is with a quick check of his books.