In Prague in 2018, workers find in an abandoned warehouse film reels that had been hidden there since the fall of the Berlin Wall. These are the images of the Slansky Trial, which in 1952 was a summit of Stalinist terror and anti-Semitism: a macabre production in which 14 top leaders of the Communist regime, most of them Jews, were accused of imaginary crimes and forced, through torture and threats, to make a public confession of their guilt, which was also imaginary. 11 of them were sentenced to death and hanged. With the help of these recently restored exceptional archives and a dive into the archives of the secret police, Ruth Zylberman went to meet these broken families in order to retrace the complex trajectory of three of these men, Rudolf Slansky, Artur London and Rudolf Margolius.