Re: Season 15 Spoiler Lab Discussion Well I am happy that they pull a new serial killer into the show. Photos from 15x03 looks great and I'm so excited to 15th season. And I think that CSI will get a 16th season. Why? Reason is simple- show have many fans, still after 15 years. Look on Under The Dome or Extant now. So I think that CBS will get a another season for CSI.