The main entrance of the Wanamaker Mall just off Market Street soars
atrium-style to seven stories, and echoes with the voices of the hundreds 
passing across the main floor. Tikki joins the crowds taking the escalators to 
the sublevel concourse. A broad passage leading off the northern end of the 
concourse connects directly with the Thirteenth Street subway station. Telecoms 
line the walls. Tikki makes calls from places like this, at the heart of the 
metroplex, to minimize the chance of police or other security agencies picking 
up her conversations in random scans of telecom lines. She picks a stand, puts a 
wad of chewing gum over the visual pickup, then checks her wrist chronograph. 
When the time hits 20:05:00, she starts dialing.