By the age of 4, Lukas was being groomed for a show business career. His first film role was that of the youngest of the doomed children in Testament (1983). By 1985, he would gain notice when he starred as Samuel, the little Amish boy who witnesses a murder in Witness (1985). He would be nominated for an Emmy in the Television Movie The Ryan White Story (1989) (TV). By his teenage years, he would appear with Jessica Lange in the Music Box (1989), and Steve Martin in Leap of Faith (1992). On Broadway, Lukas starred with Steve Martin and F. Murray Abraham in "Waiting for Godot".

Credit: imdb.com