David Cubitt played Doug Roach in all four episodes.

Information as found on FOX.com's American Embassy site:

David Cubitt's feature films include "Ali," "The Perfect Son," Frank Marshall's "Alive" starring Ethan Hawke and "K2."

He starred in several television series such as "Turks" and "Traders," for which he received Canada's Gemini Award for Best Actor, and had recurring roles in the series "That's Life" and "Michael Hayes." Other television credits include guest-starring roles in FOX's "The X-Files," as well as cable's "Outer Limits" and "Poltergeist." He also appeared in the network movies "Major Crime" and "Friends to the End."

His theater background includes appearances in the plays "Road," "Fortune and Men's Eyes" and "Spoon River Anthology."