Scrod returns to the party, looking a bit determined.  "Hey, fellows, got a great idea," he says.  "There is someone in Glasstaff's quarters that shouldn't be.  If you help me catch them, It'll be a nice show of loyalty and I'm sure Glasstaff will reward us.  There is a secret entrance to his rooms right here." he continues, pushing on the wall to reveal a hidden passage containing a staircase down and to the north.