|"From now on everything is by the book"|
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|Minor Character: Las Vegas|
|Family||Kelly Gordon (daughter)|
|Portrayed By||John Saxon|
|First Appearance||Grave Danger, Part 1|
Walter worked as an aerospace engineer. His daughter, Kelly Gordon, was sent to prison for being an accessory to murder after her boyfriend shot someone in her presence. Seeing her being humiliated and abused in prison dealt a heavy blow on Walter, who decided to take out revenge on the Las Vegas Crime Lab responsible for incarcerating his daughter. He constructed a casket with a camera, a lamp and a ventilation system, placed the guts of a dog near a building at a street corner in Las Vegas along with a styrofoam cup (the piece of evidence which linked Kelly to her crime scene) in a fake evidence bag and called the police anonymously. Nick Stokes was the CSI sent to the scene at which Walter abducted him. He then buried Nick in the Nevada desert near a plant school Kelly used to work at, leaving some light sticks, a tape recorder with a message and a loaded gun in case Nick decided to kill himself. He also planted Semtex charges connected to pressure detonators beneath it, intending them to kill Nick and anyone nearby if he was found.
A few hours later, the crime lab received a package containing a tape with the song Outside Chance by The Turtles and a USB flash drive containing a link to a website on which there was a link to the camera inside the casket along with a ransom demand for $1 million in cash within 12 hours. Due to the department's policy not to negotiate with terrorists and the fact that the lab had no clues that could help it find Nick in time, Catherine asked her father, Sam Braun, for the money. When she received the money, Grissom took them to the address given to them by Walter. He waited for Grissom to arrive and taunted Grissom for a moment about Nick's abduction. Grissom then slid the money along the floor to Walter. Walter discussed his grief about his daughter. Then he took off the jacket of his suit to reveal pounds of C4 strapped all around his waist. He then told Grissom to stand back before blowing himself up, taking any knowledge of Nick's location and the $1 million with him. The CSI team were still, however, able to find Nick and eventually saved him. However he did have a psychological victory over Nick, as his experience of being buried alive clouded his thinking on cases and made him psychologically aware that his life could easily be destroyed.
- Nick Stokes (abducted, placed in a coffin rigged with explosives and buried; was rescued)
- Himself (committed suicide by blowing himself up)
- Gil Grissom (attempted; was caught in the blast after Walter blew himself up, but not injured)
- The burial site explosion (no casualties):