The CSI: Crime Scene Investigation franchise remains a juggernaut of the television world with the spinoff, CSI: Vegas, returning for a third season later this year. After over two decades of CSI, including the original series and four spinoffs, the franchise is one of the most important and well-recognized in the incredibly oversaturated police procedural genre. As such, the franchise is very highly regarded within the genre of television procedurals.
Source：https://www.cbr.com/every-csi-series-ranked/
