The heat is on. CSI: Crime Scene Investigation is back! This season brings new characters, new relationships, and new and ever-more confounding crimes. Join Grissom and the night shift team for another 12 episodes of the original and best forensics drama. Season 7 is bigger and bolder than ever before. Grissom and Sara's relationship heats up; Catherine and her daughter become embroiled in her father's crooked business; Greg is a victim of a gang beating and Grissom faces his most enigmatic foe yet - a serial killer who creates a series of "miniatures" - mini replicas of their real crime scenes, with eerie precision.