| Bart | Ambrose | One of the Scully's partners. |
| Diego | Antonelli | A career diplomat. |
| Willie | Backstrom | One of the law partners. |
| Adheem | Barakat | A warlord and terrorist. |
| Mr. | Barry | A mansion owner. Mitch's friend. |
| Mona | Branch | The third secretary. |
| Riley | Casey | Managing partner of Scully's in London. |
| Adam | Celik | Omar's son. |
| Omar | Celik | Lannak's CEO. |
| Mavis | Chisenhall | One of the Scully's partners. |
| Simon | Croome | Scully's counsel. |
| Solomon | Frick | A banker. |
| Muammar | Gadaffi | Antagonist. The colonel who builds the Gaddafi Bridge. |
| Cory | Gallant | Scully's chief of security. |
| Giles | Gatterson | Mitch's acquaintance. |
| Phinney | Gibb | A deputy minister. |
| Sara | Hanrahan | The second secretary. |
| Samir | Jamblad | A Lannak employee. Luca's friend. |
| Darian | Kasuch | The man who runs Crueggal Worldwide. |
| Tad | Kearny | The man on death row. Mitch's client. |
| Ollie | Laforge | One of the Scully's partners. |
| Roberto | Maggi | A Scully partner. |
| Bennett | McCue | One of the Scully's partners. |
| Abby | McDeere | Mitch's wife. |
| Clark | McDeere | Mitch's son. |
| Mitch | McDeere | A lawyer. |
| Ray | McDeere | Mitch's brother. |
| Avery | McKnight | Mitch's old friend. |
| Royce | McKnight | Mitch's old friend. |
| Philippa | Melendez | An expert on moving money. |
| Sheldon | Morlock | One of the more influential partners on the committee. |
| Gina | Nelligan | An art teacher. |
| Dr. | Omran | Mitch's doctor. |
| Amos | Patrick | The founder of Capital Defense Initiative. |
| Victoria | Poley | A former federal judge. |
| Kay | Quin | Lamar's wife. |
| Lamar | Quin | Mitch's friends. |
| Suzanne | Quin | Lamar and Kay's daughter. |
| Wilson | Quin | Lamar and Kay's son. |
| Piper | Redgrave | One of the Scully's partners. |
| Jerry | Robb | Attorney of record for the state of Libya. |
| Marcello | Rosario | A chef. Marco's brother. |
| Marco | Rosario | A chef. |
| Gypsy | Rose | Giovanni's minder. |
| Jack | Ruch | The top man at Scully. |
| Anita | Sandroni | Luca's wife. |
| Giovanna | Sandroni | Luca's daughter. |
| Luca | Sandroni | Jack's colleague. |
| Sergio | Sandroni | Luca and Anita's son. |
| Ralph | Stanley | A famous builder. |
| Stephen | Stodghill | Mitch's associate. |
| Harold | Sutherland | Maxine's husband. |
| Maxine | Sutherland | Harold's wife. |
| Avery | Tolar | Mitch's mentor and supervising partner. |
| Denys | Tullos | Lannak's in-house counsel. |
| Mr. | Wall | The head of Scully's DC office. |
| Abdo | | Mitch and Giovanna's Turkish security. |
| Alvin | | Cory's associate. |
| Aziz | | Mitch and Giovanna's Turkish security. |
| Barry | | Jack's brother. |
| Bella | | Luca's friend. |
| Bella | | Luca's current girlfriend. |
| Carlotti | | An Italian billionaire. |
| Carter | | Clark's twin. Mitch's son. |
| Gau | | Mitch and Giovanna's Turkish security. |
| Hamal | | One of the kidnap victims. |
| Haskel | | Mitch and Giovanna's Turkish security. |
| Hassan | | Noura's friend. |
| Jennings | | Stephen's lawyer. |
| Karlo | | Anita's boyfriend. |
| Mia | | Luca's secretary. |
| Noura | | One of Abby's kidnappers. |
| Saleel | | One of the kidnap victims. |
| Tanner | | Barry's all-around man. |
| Walid | | Youssef's partner. |
| Youssef | | A Lannak employee. The truck driver. |
