Ep 11. The Heart of New York

Captain Scarlet and the Mysterons Season 1 Episode 11, "The Heart of New York", follows Captain Black's latest attempt to destroy the city of New York. The Mysterons have sent a threat to the city, warning that they will strike with their powers of retro-metabolism. The Spectrum team is dispatched to prevent destruction and the global fear that could follow.

The episode begins with New York on alert, with the police and the military deployed across the city, looking for any potential threat. Captain Scarlet and Captain Blue are sent to investigate the underground system that lies below the city, hoping to find any clues related to the Mysterons' plan. Meanwhile, Colonel White and Captain Grey monitor the situation from the control room and try to decipher the meaning behind the threat.

As Captain Scarlet and Captain Blue search the tunnels, they stumble upon a sensor that detects the presence of a Mysterons agent nearby. They follow the signal to a hidden room where they find a device capable of emitting a powerful radiation. They realize that this device could be used to carry out the Mysterons' plan and decides to destroy it.

Captain Scarlet inspects the device and soon realizes that it is set to go off in a few minutes. Fearing the worst, he alerts Colonel White and informs him of the situation. However, he is quickly interrupted by the Mysterons voice, which warns him that it's too late to stop their plan. Captain Scarlet rushes to stop the device before it can cause destruction.

Meanwhile, Colonel White decides to launch Spectrum's latest weapon, the Neutralizer, which can disable any atomic-based device. Captain Grey takes the weapon to the New York City Hall to use as a last resort in case Captain Scarlet fails to stop the device.

Captain Scarlet manages to stop the device just in time with the help of a local construction worker named Joe, who provides him with a massive boulder to block the energy flow. But just as he thought the danger had passed, Captain Scarlet and Captain Blue are ambushed by an army of Mysteronised construction workers, who attempt to stop them from reaching safety.

The situation grows increasingly tense as the Spectra team struggles to fend off the Mysterons. At the same time, Colonel White orders Captain Grey to activate the Neutralizer. But things take a turn for the worse when the Neutralizer launches on its own, causing massive destruction to New York City.

The final scene shows the Spectra team's duty of looking after the cities of the world, and Colonel White gives orders for a city-wide cleanup to help restore New York after the disaster. In the end, Captain Scarlet and his team return to their base, having put a stop to the Mysterons' latest plan.

Overall, "The Heart of New York" is an action-packed episode of Captain Scarlet and the Mysterons, in which the Spectrum team must once again work together to save the world from the Mysteron threat. The tense situations, the well-choreographed actions scenes, and the stunning animation make it one of the standout episodes of the show's first season.