Go to North Freeport's Compassion Road ( -172, -58, -175 ) Copy/waypoint -172, -58, -175, put on your white Cultist cowl and then click the sewer cover to enter The Shadowhand Crypt. If you forget to put your cowl on before you enter you will be threatened by two guards. If you try and put on the cowl while in the Crypt you will be outed and attacked.
Speak to the doorman. He will tell you the meeting is about to begin.