Grave Danger, Part 1

CSI Nick Stokes is kidnapped while investigating a crime scene and buried alive in a glass casket by his kidnapper. The Las Vegas Police Department receives a package with a tape and a USB key which allows them to watch Nick inside the casket, together with a request of one million dollars cash to release him. The mayor refuses to pay the ransom, but Catherine Willows convinces her wealthy father to provide the money. Gil Grissom schedules a meeting with the criminal to deliver the money and be informed where Nick is.