A representative for the production confirmed to Playbill.com that Osnes recently filmed an episode of the crime drama, which is set to air in October. Osnes also tweeted a photograph of herself on set.
Osnes' Bonnie & Clyde co-star, Tony Award nominee Jeremy Jordan, was recently announced to guest star on "Elementary." He will play Joey Castoro, the son of the surgical patient who died in Joan Watson's (Lucy Liu) care. Jordan is also slated to appear in an October episode.
"Elementary" will return to CBS Sept. 26 at 10 PM ET. Visit CBS.com/Shows/Elementary.