Eric Delko returns as an expert witness for the defense, pitting himself against his old team.

Three volleyball players mysteriously drop dead on the court while Calleigh’s testimony against Delko threatens his future as a CSI.

When the most hated man in Miami is murdered, the CSIs go on the hunt for his killer and his hidden treasure.

Derek and Meredith visit the obstetrician and receive disturbing news; Lexie notices April and Meredith growing closer; Jackson tries to get ahead in the operating room.