CSI: STL

CSI: STL (Crime Scene Investigation: Saint Louis, stylized as CSI: STL/ Crime Scene Investigation ) is an American crime drama television series that debuted on CBS on October 6, 2025. It is a spin-off of CSI: Vegas (istelf a sequel of the long-running series CSI: Crime Scene Investigation), and the sixth series in the CSI franchise transplanting the same template and trickery—gory crimes, procedural plot and dazzling graphics—into [a new city] while retaining the essence of the original idea.