Ep 1. Apocalypse (1)

In the season 11 premiere episode of 'Silent Witness' titled "Apocalypse (1)", the show follows the story of a mysterious outbreak that spreads across a university campus. With students falling ill left and right, pathologist Nikki Alexander is called to investigate the cause of the disease. However, as she delves deeper into the case, Nikki realizes that there is more to the situation than what meets the eye.

As she begins her investigation, Nikki's focus turns to a young woman named Jane, who is the first person to show symptoms of the strange illness. As Nikki conducts her autopsy on Jane's body, she is shocked to discover that her death may not have been due to natural causes. Meanwhile, Dr. Harry Cunningham and forensic scientist Leo Dalton are also investigating the outbreak in their own ways. Harry is tasked with tracing the source of the illness back to its origins, while Leo is analyzing samples of the disease in his laboratory.

As the team works tirelessly to find answers, they begin to uncover a shocking conspiracy involving a powerful pharmaceutical company. Their investigation soon leads them to a number of suspects, including Jane's distraught boyfriend and the head of the university's science department. However, as they delve deeper into the case, it becomes clear that there are many more players involved than they first suspected.

With time running out to stop the outbreak before it becomes a full-scale epidemic, Nikki, Harry, and Leo must work together to uncover the truth and bring those responsible to justice. But as they get closer to the heart of the conspiracy, they find themselves in grave danger, and they realize that the true scope of the plot may be far more sinister than they ever could have imagined.

Overall, the season 11 premiere of 'Silent Witness' is an electrifying and suspenseful episode that will keep viewers on the edge of their seats. With complex characters and a gripping plot, it sets the stage for what promises to be an intense and thrilling season of the hit British crime drama.