Dexter (42)

Miss Dexter (PROSE: ) was a ruthless security agent working for Mr Saxon, entrusted with the task of finding the Tenth Doctor and his companions.
Miss Dexter enlisted Francine Jones' help, tapping and tracing Francine's phone conversations with her daughter Martha, who was travelling with the Doctor at this time. (TV: )
She was at the Jones' house when Mr Saxon ordered her to arrest all of Martha Jones' family and bring them to the Valiant. After a brief struggle, Dexter managed to arrest Francine, Clive, and Tish Jones, during which she ordered her guards to open fire on Martha. (TV: )
=== Other realities ===
During "The Year That Never Was" following the Toclafane invasion, she continued working for the Master as one of his sector chiefs in the rank of ADC, mostly from the Valiant; following his orders, she put UCF Griffin in charge of finding Martha. (PROSE: ) These events were negated following the destruction of the paradox machine. (TV: )
== Behind the scenes ==
According to the readthrough script for , the role of Miss Dexter was originally intended to be a return of the "mysterious man" from .S3: EP7 - 42 on bbc.co.uk
This character's name was never revealed on screen. In both and , she is credited as "Sinister Woman". However, features a female character working for , in charge of finding Martha Jones and with physical description matching that of Elize du Toit's character. Given that the actor herself describes her role as "Miss Dexter"Elize du Toit Official Doctor Who (2007) via the Wayback Machine, it is the most plausible assumption that the name was used in the eventual shooting script and was adopted in the anthology The Story of Martha.
== Footnotes ==
Category:21st century individuals
Category:Human security personnel
Category:Human henchmen
Category:Saxon Master's assistants
Category:Residents of England