- Jason Alan Staines
- Â Sad American 6 episodes
- Estrid Barton
- Â Ella Ramsden 6 episodes
- Robert Jack
- Â Bob Monetti 4 episodes
- Dominik Tiefenthaler
- Â Edwin Bollier 4 episodes
- Bianca Bardoe
- Â Tanya Burman 3 episodes
- Mercer Boffey
- Â Ed Marshman 3 episodes
- Barbara D'Alterio
- Â Mary Lou Ciulla 2 episodes
- Dana Haqjoo
- Â Nazir Jaafar 2 episodes
- Mikhail Basmadjian
- Â Inspector Scicluna 2 episodes
- Peter Svatik
- Â Hans Jurgen Sonntag 2 episodes
- Jennifer Armour
- Â Joy Engleman 1 episode
- Brendan Patricks
- Â Dr. Hayes 1 episode
- Finlay Robertson
- Â Mick Charles 1 episode
- Florian Clare
- Â American Journalist 1 episode
- James Anderson
- Â Thomas Plaskett 1 episode
- Pippa Winslow
- Â Senior Pan Am Lawyer 1 episode
- Aneela Qureshi
- Â Mrs. Jaafar 1 episode
- Chris Dingli
- Â Holiday Inn Desk Clerk 1 episode
- Niall Macgregor
- Â Alan Turnbull QC 1 episode
- Alex Magliaro
- Â Frank Ciulla 1 episode
- Kristian Wanzl Nekrasov
-  Peter Flückiger 1 episode
- James Matheson
- Â Mr. Harley 1 episode
- John Paul Wagner
- Â Agent Howard 1 episode
- Yassine Mkhichen
- Â LAA Worker 1 episode
- Simone Spiteri
- Â Giaka's wife 1 episode
- Julian Calleja
- Â Tony Gauci 1 episode
- Alan Paris
- Â Guido de Marco 1 episode
- Frances Galea
- Â Amy - FBI Data Analyst 1 episode
- Henry Zammit Cordina
- Â Edward Gauci 1 episode
- Khalid Laith
- Â Giaka unknown episodes
- Scarlett Trani
- Â Washington Restaurant Waitress (uncredited) 1 episode