AshtonHolmesAshton Holmes has secured the co-starring role opposite Jamie Lee Curtis in CBS’ untitled David Marshall Grant pilot, formerly known as Only Human. The medical drama, from Carl Beverly and Sarah Timberman’s Timberman/Beverly and CBS TV Studios, is based on an Israeli format, revolves around quadruplets — three brothers and a sister — who grew up on a reality show. Curtis will play their mother, Caroline Lang, a dynamic and distinguished physician who now runs the hospital. Anna Brewster has also been cast as the sister, Diana, a doctor who has dedicated her life to research.

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Holmes, repped by APA, Intellectual Artists Management and attorney David Feldman, will play Gary, possibly the most brilliant of the Lang quadruplets, who left medical school to travel the world and find himself before a near-death experience impels him to head back Stateside to the loved ones he left behind. When he learns that his brother Jonathan is now deeply involved with Jennifer, the love of his life, Gary realizes how much he may have lost when he left the U.S. Holmes starred as the villain in the first season of ABC’s Revenge and recently wrapped a stint on CBS’ Criminal Minds.

Grant penned the script for the pilot, which he exec produces with Timberman, Beverly, the Israeli series creators Giyora Yahalom and Oren Jakobi as well as Yona Wiesenthal, Avi Armoza, Eilon Ratzkovsky, Tariq Jalil and David Garrett.