Sylvia listened for any sign of a conversation, or for any sound that would indicate that someone would come in. However, nothing came except for one of them saying that they were going out for a drink. After hearing that, she decided to tell Dinah, "[i]OK. Climb back up Dinah, but stay on the rooftops. Try and see if you can get a good look at who leaves and enters the building from there. Stay out of sight,[/i]" She figured that if Dinah can see who is leaving, then she can see one of the members of the gang, as well as see who else comes into the particular building.