Ep 4. Nikola Tesla's Night of Terror

In the fourth episode of Doctor Who's 12th season, titled "Nikola Tesla's Night of Terror," the Doctor and her companions - Yaz, Ryan, and Graham - travel to New York City in the year 1903, where they find themselves caught up in a battle between two alien races, one of whom is trying to steal inventor Nikola Tesla's latest creation.

As soon as they arrive in New York, the team finds themselves in the middle of a power outage that is affecting the entire city. Investigating the problem, they discover that a group of aliens has crashed their ship into the side of a building, causing the blackout. The aliens turn out to be the Skithra, a race of insectoid creatures who are looking for a new source of power to replace their own failing technology.

The Skithra have their eyes set on Tesla's latest invention, a device that he claims can transmit limitless energy through the air without the need for wires. The Doctor quickly realizes that the aliens are not the only ones interested in Tesla's work, and that a rival inventor, Thomas Edison, is also plotting to steal the invention for himself. As the Doctor and her team try to protect Tesla and his device from both the Skithra and Edison, they soon realize that the two rivals are not as different as they seem.

In the midst of all this chaos, the Doctor becomes fascinated by Tesla and his work. She is struck by his genius and his determination to bring clean, free energy to the world. As she gets closer to Tesla and learns more about his life, the Doctor also becomes aware of the discrimination and rejection Tesla faces as an immigrant and a scientist who thinks differently from those around him. Despite his many setbacks, Tesla remains committed to his vision, and the Doctor can't help but be inspired and moved by his passion.

As the night wears on, the situation grows increasingly desperate as the Skithra launch a full-scale attack on Tesla's lab, determined to get their hands on his invention at any cost. The Doctor and her team race to protect Tesla and stop the aliens before it's too late, leading to an explosive showdown that will leave the team forever changed.

With stunning visuals, heartfelt performances, and a thrilling story that balances action, humor, and heart, "Nikola Tesla's Night of Terror" is an unforgettable episode of Doctor Who that celebrates the power of imagination and perseverance in the face of adversity. Fans of the show are sure to be captivated by this sci-fi adventure that is equal parts exciting and moving.