Untamed Heart agent, MGM had greenlighted the project. Originally, the film was titled "The Baboon Heart" in honor of an infant named Baby Fae (born 14 October 1984) who received a cross-species heart transplant from a baboon to fix a congenital heart defect. Initially, Bill had not considered Christian Slater for the role of Adam, “but then it was just the obvious choice." For the role of Caroline, Bill remembered auditioning Marisa Tomei for his earlier film, "Five Corners". While she had been too young for that role, after her success with "My Cousin Vinny" he felt she was right for the
The Boy Who Was a King term. The film presents not only the life of the former Tsar, but also intertwines within the story vignettes of various Bulgarians, who were supporting him, sending him gifts, or merely tattooing his face on their body. The story is told through personal footage and vast amounts of archive material. The film received praise for its editing and use of archives with Variety's Robert Koehler writing that "Pic’s terrific use of archival footage includes an exiled Simeon interviewed in the early ’60s, disputing his playboy rep." and "Editing is aces." The Boy Who Was a King The Boy Who Was