Plus, watch an exclusive clip of her as Catherine Willow.
Catherine Willows is back!
Watch the sneak peek above.

Mary Helgenberger on ‘CSI: Vegas’.Sonja Flemming/CBS
EW also spoke with Helgenberger about her return.
See what she had to say about getting back into Catherine’s boots below!
ENTERTAINMENT WEEKLY: What was your first day back like?
It was a scene with Paula [Newsome].
She’s a wonderful actress.
They couldn’t have been more welcoming.
But it was interesting because I had played Catherine Willows for so many years.
It’s like a part of me.
I was really burned out, I just kind of had to step away from that character.
It wasn’t that I was done playing her.
It felt great to be back in her boots and her tight jeans.
So it seems like it must have been pretty easy for you to reconnect with Catherine?
Yes, it was.
I mean, I have to say it took a couple of episodes to get warmed up.
It’s sometimes a struggle for people to to get this dialogue right.
And to get it so that it flows naturally.
So, like with any job, it takes a few days to get warmed up.
Where do we find Catherine when we see her again?
At this point, she’s certainly retired from crime solving.
But she’s been involved in the casino that I that she inherited from her father.
It’s a big thing to come back to a show.
It’s incredible that a show can really ignite somebody’s passion and ignite their interest in science.
Well, what has changed besides obviously, the cast, is the set.
The set is 10 times the size of the one we had.
There’s different labs and equipment, all the bells and whistles.
But we still have theCSIshots we still have the flashbacks.
The integrity of the show has been maintained.
CSI: Vegasreturns Sept. 29 on CBS.