Guest Stars David Nykl as Dr. Radek Zelenka Kavan Smith as Major Lorne Jewel Staite as Dr. Jennifer Keller Brenda James as Dr. Katie Brown Zach Selwyn as Scientist Co Starring Linda Ko as Nurse Marie Niall Matter as Lt. Kemp Joel Cottingham as Doctor Graem Beddoes as Scientist D. Harlan Cutshall as Marine Robert Clark as Dr Gerald Baxter
