09/30/2008 AT 12:20 PM EDT
is already making her Broadway debut in All My Sons
– but the actress will be singing and dancing her way through a guest appearance on ABC's Eli Stone
– and PEOPLE has a first look at her in character.
Holmes will play a non-profit attorney with a mysterious case – and some musical ability – during her Oct. 21 appearance.
"She’s singing and dancing,” Eli Stone
producer Greg Berlanti told PEOPLE
in July. But the producer wouldn't reveal much more about the musical show, saying, "We want to keep an element of mystery for the audience."
What's not a mystery, though, is how Holmes fared on set.
"She was super gracious and lovely," Natasha Henstridge, who plays the title character’s ex-fiancée, said in July. "And statuesque and gorgeous."
– Brian OrloffRELATED GALLERY:
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