Billy Smith plays New York gangster Davey Murdoch. Smith also appeared in Martin Scorcese's "The Departed" as a police officer. He had a starring role as an Irish American gangster in Brotherhood.
| Season one appearances | |||
| Boardwalk Empire | The Ivory Tower | Broadway Limited | Anastasia |
| Nights in Ballygran | Family Limitation | Home | Hold Me in Paradise |
| Belle Femme | The Emerald City | Paris Green | A Return to Normalcy |