The actress plays Ria Torres, a protégé of Cal Lightman (Tim Roth), on the Fox drama.
"We are gonna get grittier, dirtier, and all around saucier," she told TV Fanatic. "We'll be in the street more and dealing with some crazy cases."
She also hinted that relationships between the show's lead characters could dissolve, teasing "a big family fight at the Lightman Group that we'll have to resolve".
Raymund added that she would like to see Torres interact more with Gillian Foster (Kelli Williams) and series newcomer Monique Curnen in the new episodes.
"Let's get some female power up in the Lightman House!" she said. "Could you imagine Cal Lightman butting heads with three strong women in one scene? Talk about drama!"
Lie To Me's second season is currently airing on Fox. The third season is expected to air in November.