|Main character(s):||Erina Lessak|
|Main setting:||SS Pentallian, Torajii system, 42nd century|
|Writer:||Joseph Lidster, based on characters and situations created by Chris Chibnall|
|Printed in:||Doctor Who website|
|Format:||Website-based short fiction|
42 Prologue is a web-exclusive short story published on the BBC's Doctor Who website in 2007, promoting the then-upcoming broadcast of the episode 42. It was the first of several Tenth Doctor short stories to be published online up to the end of 2009.
Focusing on Engineering Trainee Erina Lessak, the story reflects back on how she become a trainee, her feelings about the crew, and her activities in the minutes preceding the arrival of the Doctor and Martha Jones aboard the SS Pentallian.
- Tenth Doctor
- Martha Jones
- Erina Lessak
- Dev Ashton
- Kath McDonnell
- Riley Vashtee
- Abi Lerner
- Orin Scannell
- Erina's last name is misspelled Lissak several times in the story.