Ep 13. Halt & Catch Fire

In Supernatural season 10 episode 13, titled Halt & Catch Fire, the Winchester brothers continue their quest to rid the world of evil supernatural beings. This episode kicks off when Dean receives a call from an old friend, who is running a computer security firm. The friend tells Dean about a mysterious death of an employee at his firm, and asks for the Winchesters' help in investigating the cause of death.

As the brothers start to investigate the case, they realize that the death is not a result of a supernatural presence, but rather a sophisticated computer virus that has caused the death. They discover that the virus is a work of a man named Charlie, who is a computer hacker and has designed the virus as a way to seek revenge against those who have wronged him in the past.

As the brothers start to track Charlie, they soon realize that he has more than just revenge on his mind. Charlie has come into possession of a powerful artifact, which he plans to use as a weapon against the cyber world. The artifact can cause a massive electromagnetic pulse that can wipe out all computer systems and send the world back to the Stone Age.

The Winchesters now have to stop Charlie before he can use the artifact and cause irreparable damage to the modern world. They enlist the help of a computer expert, who helps them infiltrate Charlie's base and stop him before he can cause mayhem.

As the brothers try to stop Charlie, they face several obstacles, including Charlie's army of followers, who are willing to do anything to protect him and his plans. They also face the challenge of trying to stop a threat that is not supernatural in origin, but rather a result of human error and ingenuity.

With time running out, the Winchesters face a race against the clock to stop Charlie and prevent the EMP from going off. They soon discover that Charlie has installed a fail-safe mechanism that will cause the EMP to go off if his demands are not met, putting the lives of millions of people in danger.

In a gripping finale, the Winchesters finally come face to face with Charlie, and a showdown ensues. With the help of their friend and the computer expert, the brothers are able to stop Charlie and retrieve the artifact before it can cause any harm.

In Halt & Catch Fire, the Winchesters face a different kind of threat, one that is closer to home than they imagined. The episode explores the dangers of technology and its vulnerabilities, and the Winchesters must use their wits and skills to stop a human-created threat. It is a thrilling episode with high stakes and unexpected twists and turns, and leaves the viewers craving for more.