 After returning from military service, Higgins made his Broadway debut on February 18, 1946 in a production of "Antigone" (1946), starring Katharine Cornell and Sir Cedric Hardwicke in a modern-dress adaptation of the Sophocles play based on Jean Anouilh's French version.Higgins played the role of the Third Guard.Higgins appeared in the original Broadway production of Peter Shaffer's "Equus" in the role of Frank Strang, the father of a youth who blinds horses, alongside Peter Firth as the youth, Frances Sternhagen as Alan’s mother and Anthony Hopkins as his psychiatrist.