Numb3rs Season 4 Episode 4 Thirteen

Don Eppes, an FBI agent who works in Los Angeles, uses his mathematical genius and his brother Charlie's analytical mind to solve crimes. Charlie, a professor of mathematics at Caltech, often helps the FBI solve complicated cases by providing them with mathematical models and theories.

In season 4, episode 4, titled "Thirteen," Don and his team investigate a bank robbery that turns into a hostage situation. The hostages include Charlie, who was at the bank to withdraw money for a new computer system at Caltech. Don and his team are convinced that the robbers have a larger plan in place, but they struggle to piece together the intricacies of the operation.

While the FBI negotiates with the robbers, Charlie uses his mathematical skills to help the situation. Through his calculations, he discovers that the robbers may be planning to blow up the bank, causing the team to rush to diffuse the situation. Meanwhile, Don and his team uncover a connection between the robbers and a group of radical environmentalists who have a history of using violent means to achieve their goals.

As the tension mounts and the clock ticks down, Don, Charlie, and the FBI must work together to outsmart the robbers and prevent a catastrophe. Along the way, they grapple with difficult ethical questions about the use of violence to achieve political ends, and Charlie must confront his own feelings about his role in the situation.

"Thirteen" is a gripping episode that showcases the strengths of both Don and Charlie as they work together to solve a complex crime. The episode highlights the importance of collaboration and problem-solving, as well as the challenges that arise when dealing with high-stakes situations. With its tense storyline and nuanced character development, "Thirteen" is a standout episode in the fourth season of Numb3rs.