Marg Helgenberger, who played the stoic criminalist for CSI's first 12 seasons between 2000 and 2012.

Is reprising her role in season two of the show's reboot, CSI: Vegas.

But Helgenberger shared exclusively that she didn't want the character to return for just any old case. 

"I wanted to make sure I was coming back for the right reasons, and the character was going to be going back to the crime lab for all the right reasons," she explained.

"It's not about the money. It's something that's just kind of in her blood that she knows how to do."

Helgenberger revealed that she met with executive producer Jason Tracey to discuss her character's arc.

They ultimately came up with an idea that would satisfy both of them, with Catherine returning to investigate some "unsavory" characters.

But the revival wasn't as simple as an open-and-closed investigation.

Helgenberger shared, someone close to Catherine goes missing, and the investigator is the only person who can solve it. 

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