- Richard Madden (Mason Kane / Kyle Conroy)
- Priyanka Chopra Jonas (Nadia Sinh)
- Ashleigh Cummings (Abby Conroy)
- Roland Møller (Anders Silje / Davik Silje)
- Lesley Manville (Dahlia Archer)
- Stanley Tucci (Bernard Orlick)
Citadel — S2E6
Episode: Highlands
Air Date: 2026-05-06
Runtime: 36 min
Overview
As Joana accelerates the plan to assassinate the Russian President at the G8 Summit, Mason and Nadia take Abby to a safehouse in Scotland. But when they uncover the horrific truth about what was done to Abby, it triggers a devastating chain of events.