When Reid and Maria visit Kokorov at the palace it's clear he and the Ambassador have a special relationship.

Could Maria and Natsev be on course for a similar alliance but along different lines?

New alliances formed and previous suspicions now confirmed, it's time for Maria to make a decision about her next steps.

Maria...Sinead Keenan

All other roles by Eddie Toll, Anna Krippa, Ani Russo and Hana Zidek

Written by Chris Brandon

With thanks to Theresa Bubbear and Leigh Turner for their testimony and Tanya Nedashkovskaya for her translations.

A Hat Trick production for BBC Radio 4