Despite the declared end of the pandemic, there are still threats to the UK, particularly from Russia.

 Friends from across the Atlantic who like to meddle continue to track and follow the shadowy financing team supporting the UK’s security services.

 They assured the UK they would not, but disparate agencies in the USA have different agendas.

Michelle and Hugh Turnbill are now married.

 The couple still manage MI5's and MI6's clandestine funds.

 They occasionally sail around the Greek Islands with the Harper sisters or stay at their new house in Mykonos.

 They desire a normal life but are aware that caution must still be exercised, and complacency avoided.

 A Treasury probe investigating missing funds puts their way of life and lives in danger.

An unhappy assistant in the Treasury has been leaking information to someone who appears to be a journalist but he is actually sending the reports to Russia.

 The Russian security services launch an urgent investigation and may well take more direct action.

 They discover names and some photos.

 Information previously covered up by a Russian general.

MI6 needs to protect the system, but some elements still want more control.

 Kathrine commences an operation to protect them.

 One of her old assets needs to escape Russia.

Russian forces are closing in and are keeping an eye on the Treasury.

 MI5 is keeping an eye on them in an effort to identify the source of the Russian information.

 The finance team needs to dodge all the other teams trying to take control of them and the money.