This is exclusive C21 subscriber content
To view you need a Basic Site, C21Pro or Access All Areas subscription:
Registered users and subscribers sign in here:
For phone support please call C21 on +44 (0) 20 7729 7460
Writer Tony Grisoni, director Tom Shankland and executive producer Preethi Mavahalli join the conversation to discuss how the series goes beyond the noirish crime drama at its centre and how they created the two cities in which the thriller plays out.
