S5·E12 Tribunal

In 1944, young Leon Zgierski (Roman Danylo), an inmate in the Birkenau concentration camp watches as First Lieutenant Karl Rademacher shoots his wife and sends his daughter to the gas chambers. The murder is witnessed by a mysterious figure, time-traveler Nicholas Prentice (Alex Daikun), who grabs Radermacher's SS jacket and, after eluding guards, pulls out an antique watch and vanishes into a glowing orange circle...