Radziwiłł w Kiejdanach, czyli po trzykroć zdrajco!

What really happened with the Radziwiłłs' betrayal during the Deluge? Was Prince Janusz truly a traitor or a victim of historical circumstances beyond his control? What role did Bogusław play? What do contemporary Lithuanians think of all this? We'll begin with a visit to Upita in Samogitia and the renowned Siciński, then move on to Tykocin Castle and the Radziwiłłs' Kiejdany.