Osborne the Night Man is a level 60 rogue trainer located outside the SI:7 headquarters in Old Town, in the human city of Stormwind.
He starts the quest 
[52] A Simple Request.
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Osborne the Night Man is a level 60 rogue trainer located outside the SI:7 headquarters in Old Town, in the human city of Stormwind.
He starts the quest [52] A Simple Request.