So I was looking at this and noticed that completing heroic slavepens is supposed to open up The Serpentshire lair questline.....anyone have any idea how this occurs since I have done heroic slavepens and done no such thing.  Maybe this is cause i am already keyed for Karazhan and I am pretty sure Gruuls Lair doesn't require a key.

Anyways just was bored and wonder if anyone knew anything about this.