A janitor falls to his death in a jellyfish-filled aquarium at a charity benefit he's working. CSI is called in to investigate and discovers his life insurance policy pays out to the CEO and company the man worked for. Horatio becomes suspicious when the team checks the records of the company and discovers a lot of employee deaths and similiar life insurance policy that were taken out on them. They look deeper into an apparent suicide of one of the employees and discover that she was actually strangled instead of dying by hanging herself. The team finds evidence of the CFO on the rope used and he finally confesses to working with the CEO taking out the life insurance policies on their employees and collecting on their life insurance payments after he carries out their deaths.

Jesse seems to have an intense interest in a beautiful woman he followed to Miami from Los Angeles.