Aidan Quinn is an Irish-American actor. His acting career began in the 1980s. During his beginnings, he starred in the films Reckless, Desperately Seeking Susan, and The Mission. In the 1990s, he became known for his performances in The Lemon Sisters, Frankenstein, Legends of the Fall, Michael Collins, and Practical Magic. Continuing his career in the 2000s, he starred in Songcatcher, Nine Lives, and Dark Matter. On television he became known for his performances in Third Watch, The Book of Daniel, and Prime Suspect. As of 2012, he stars as Captain Thomas ‘Tommy’ Gregson on the TV series Elementary.