Harriet Derbyshire (c.1893-1919) worked for Torchwood's branch in Cardiff in 1918.
Unusually for her time, she had a degree in physics from the University of Oxford (Torchwood website). Alongside Gerald Carter, her colleague from Torchwood, she investigated "hauntings" (actually time shifts) from the future at St Teilo's Military Hospital in Cardiff. She both escorted Tommy Brockless out of his ward to ensure his cryogenic freezing and returned the "future" Tommy back to his native time so as to ensure that history would take its proper course. She died one year later at the age of 26 while in active serivce. (TW: To the Last Man)
- As a physicist, Derbyshire might have had a hand in the creation of the Rift Manipulator, which is known to be under construction around 1913.
Following her death, Derbysire's body remained in cryogenic suspension in the morgue located in the Hub, in Bay 15. (Torchwood website)
Behind the Scenes
Unintentionally or otherwise, Harriet Derbyshire has the same last name as Delia Derbyshire, the electronic music pioneer associated with Doctor Who.