Ep 21. Turn of the Screws

In season 4 episode 21 of CSI: Crime Scene Investigation titled "Turn of the Screws," the CSI team is called to a construction site where they discover human remains buried deep in the ground. As they begin their investigation, they uncover a sordid history of the construction company and the land they were building on.

The team quickly learns that the construction company was responsible for building a condo complex on land that was known to be an ancient Native American burial ground. They suspect that the company may have disturbed the burial site, leading to the discovery of the human remains. However, as they continue to investigate, they realize that there may be more to the story than they first thought.

Meanwhile, Catherine is dealing with her own personal issues as she prepares to testify in court against her ex-husband, Eddie. She is struggling to balance her professional duties with her personal life, and her colleagues begin to worry about her mental state.

As the investigation unfolds, the team discovers that there may be a link between the construction company and a local Native American group who were fighting to protect the burial ground. They suspect that the construction company may have hired someone to plant evidence in order to frame the activists and discredit their cause.

With time running out, the CSI team races to uncover the truth and bring the real culprit to justice. Along the way, they must navigate a complex web of lies and deceit, and confront some uncomfortable truths about the city they call home.

In the end, the team solves the case, but not without some personal and professional repercussions. Catherine finally confronts Eddie in court, and the team reflects on the importance of respecting cultural heritage and preserving the past for future generations.