Walk East on Beacon

FBI agent James Belden (George Murphy) is tasked with finding and bringing down a communist spy ring operating in Boston. After an anonymous tip, Belden and his agents tail a man who leads them to various suspects, as they try to determine how far the espionage reaches. Meanwhile, the spies force a scientist (Finlay Currie) to divulge secret information by holding his son hostage. As the investigation continues, it seems the Russian agent Alexi Laschenkov (Karel Stepanek) might be behind it all.