Sean's initial acting training began in London, England in the early sixties. After returning to his home in Boston, Sean decided to consider an acting career in Hollywood.
In 1965 the film industry in Los Angeles was a wonderful mix of trend setting television series, imaginative theatre, excellent drama coaches and experimental independent films. The climate and opportunities were perfect for Sean to display his acting abilities.
After extensive film acting classes with Charles Conrad, Sean read for Paul Leavitt at the Gallery Theater in Hollywood. Starting with a small role as an Italian soldier, he eventually scored the lead role as the heroic figure of Father Fontana, who gave his life in place of a Jewish inmate at Auschwitz in Ralph Hocuth's disturbing dramatic play, "The Deputy".
One fortuitous evening an agent caught his lead performance and contacted Sean with an offer to manage him. She promised a meeting with Gene Roddenberry at Paramount Pictures for a possible role on a little known TV series called Star Trek.
After Sean signed with his manager he met Gene Roddenberry who was looking for the right actor to play an important role in "The Menagerie", the only two-part episode of the Star Trek series. Mr. Roddenberry gave the role of Captain Pike to Sean and this character as well as the episode is still considered one of the most popular of the Star Trek series.
This launched Sean as a professional film actor and he returned to Star Trek as one of the original crew members in his role as Lt. DePaul, the ship's first helmsman.
Sean continued his acting career in many television shows such as Police Story, Get Smart, Doctor's Hospital, and Divorce Court to name a few. During this time he was hired by R.J. Reynolds to appear in a series of cigarette ads. Sean became the original Winston man and his billboard became the largest ad campaign in R.J. Reynold's history (lasting over five years).
Sean's film career included lead roles in "Terminal Island", "Savage Abduction", "Slumber Party 1957", "Sam and Jesse", "The Corpse Grinders", "The Impossible Years", and "Bad Men of the West". Presently, Sean is developing film and television projects under the Highlight Cinema Group productions.