Actresses Kang Hye-jung and Lee Yoon-ji will make their stage debut with the play "Proof" in which they are double-cast for the lead.

Kang, who is known for her parts in films "Oldboy" and "Welcome to Dongmakgol," chose this play to make a comeback after her marriage to singer Tablo and childbirth. Lee has mostly worked in TV soaps.

Kang Hye-jung (left) and Lee Yoon-ji

"Proof," a drama about a brilliant but disturbed mathematician and his daughter, premiered in the U.S. in 2001 and won the Tony Award for Best Play the same year. It was made into a film starring Gwyneth Paltrow and Anthony Hopkins.

The play opens at the Culture Space and You in Seoul on Oct. 1.