Although Katie Holmes is currently in the middle of her Broadway debut in All My Sons, the new stage actress will be saving her singing and dancing for the small screen.

On the October 21 episode of Eli Stone, Holmes will be reteaming with exec producer Greg Berlanti (also a Dawson’s Creek vet) for quite an interesting challenge. In reality, she will be playing a non-profit lawyer. In someone’s fantasy, she’ll become…a cabaret singer? (You can see more pics from her cameo after the jump.)

While few details have been revealed about Holmes’ stint, actor Matt Letscher (Nathan Stone) said her musical performance won’t be something Eli fans will forget. “She does a song-and-dance number that is the best one we’ve ever done. We’ve done tons of [musical numbers], and she was just phenomenal.”

Eli Stone returns Tuesday, October 14 (a new day) to ABC.

(To get a look at TV Envy’s Fall Programming Schedule, click here.)