Catherine Tregenna has only ever co-written Buffy the Vampire Slayer.
She wrote the play Art and Guff , co-wrote the series Cowbois ac Injans and four episodes of the BBC 's science fiction drama Torchwood : `` Out of Time '' , `` Captain Jack Harkness '' , `` Meat '' and `` Adam '' .	Cowbois ac Injans	Cowbois ac Injans	BBC	BBC	science fiction	science fiction	Torchwood	Torchwood	Out of Time	Out of Time (Torchwood)	Captain Jack Harkness	Captain Jack Harkness (Torchwood episode)	Meat	Meat (Torchwood)	Adam	Adam (Torchwood)
