Chemistry of Death (2023–)

Harry Treadaway

David Hunter 6 episodes, 2023

Jeanne Goursaud

Jenny Krause 4 episodes, 2023

Katie Leung

Maggie Cassidy 4 episodes

Amy Manson

Ellen McLeod 4 episodes

Neve McIntosh

Josie Fraser 4 episodes

David Hayman

Andrew Brody 4 episodes

Nick Blood

Michael Strachan 4 episodes

Stuart Bowman

Iain Kinross 4 episodes

Lewis Gribben

Kevin Kinross 4 episodes

Stuart Campbell

Sean MacDonald 4 episodes

Hardy Krüger Jr.

Ben Anders 3 episodes, 2023

Alex Price

Gary Yates 3 episodes, 2023

Lucian Msamati

Henry Maitland 3 episodes, 2023

Samuel Anderson

DCI Mackenzie 3 episodes, 2023

Lauren O\'Rourke

Tina Harper 3 episodes, 2023

Roger Morlidge

Harry Timmis 3 episodes, 2023

Anna Andresen

Neil Yates 3 episodes, 2023

Jon Rumney

George Mason 3 episodes, 2023

Asmara Gabrielle

Dr. Marina Shah 3 episodes, 2023

Janet Kumah

Rev. Susan Scarsdale 3 episodes, 2023

Eleanor Grace

Grace Strachan 3 episodes

Charlie Rix

Shane Brenner 2 episodes, 2023

Jacqueline Boatswain

Diana Maitland 1 episode

Cameron Jack

Craig Robertson 1 episode

Jamie Muscato

Alan Ratcliffe 1 episode