Cast & creators
Mark O'Connell Movies and TV Shows
Mark O'Connell is connected to titles such as Star Trek: Deep Space Nine, UFO Witness. Use Gatsby to browse this filmography and find where related movies and shows may be available to watch.
Known for Writing
Biography
Mark Eugene O'Connell, formerly known as Mark Gehred-O'Connell, is an American screenwriter and author, best known for his work on the TV series 'Star Trek: Deep Space Nine' and his biography of astronomer and ufologist J. Allen Hynek.