Project Twilight

Project: Twilight is a Big Finish Productions audio drama based on the long-running British science fiction television series "Doctor Who". Sequels to this story include "Project: Valhalla" (a novel featuring characters from "Twilight"), "Project: Longinus" (a web-comic published by Scott and Wright), the audio dramas "Project: Lazarus" and "Project: Destiny", and the short story 'Project: Wildthyme'.
Plot.
1999. The Sixth Doctor and Evelyn try to find out what connects "Project: Twilight", a secret government initiative, to a seedy casino in London Docklands.