While Ronit is a staple on the show, and plays K.D. Pathak, a lawyer who fights for different cases in each episode, Shweta has been roped in just for an episode.
Shweta essays the role of Revathi, a loving wife whose husband gets trapped in a murder case and Ronit enters the picture as the couple's savior.
The episode featuring the two actors will be aired Saturday.
In Ekta Kapoor's "Kasautii Zindagii Kay", the duo played a married couple who face a lot of personal ups and downs.