Marty and his identical twin brother, Chris, underwent a rigorous and extensive nationwide talent search, ultimately emerging as the chosen ones to portray the iconic roles of Niles and Holland Perry. Concurrently, the twins were honing their craft, actively studying and appearing in various plays at the esteemed HB (Herbert Berghof) Studio in the bustling metropolis of New York City.
Berghof, the husband of the renowned actress Uta Hagen, would later have a serendipitous connection to the twins, as Hagen herself would go on to play the role of Ada, the twins' grandmother, in the film.