A documentary film. By virtually every yardstick, antisemitism in the US and Europe is rising and worsening in ways not seen since the 1930s. It comes in the forms of vandalism, social media abuse, assault and murder. Like a virus, it mutates and evolves across cultures, borders and ideologies, making it all but impossible to stop. The film explores its infectious behavior in four countries, and brings interviews with victims, witnesses, antisemites, and interviewees including Bill Clinton, Tony Blair, Fareed Zakaria, George Will and Deborah Lipstadt.