Season: 4
Original Airdate: November 2, 2007
Writer(s): Alan McCullough
Director(s): Martin Wood
Guest Stars
Jewel Staite as Dr. Jennifer Keller
David Nykl as Dr. Radek Zelenka
Kavan Smith as Maj. Evan Lorne
Brenda James as Dr. Katie Brown
Zach Selwyn as Scientist #2
Niall Matter as Lt. Kemp
Linda Ko as Nurse (Marie)
Joel Cottingham as Doctor
Graem Beddoes as Scientist
D. Harlan Cutshall as Marine
Robert Clark as Dr. Gerald Baxter
View: Script
Synopsis: With almost everyone on Atlantis infected by an amnesia-causing bacteria, McKay finds himself zip-strapped to his desk with cryptic letters on his arm and no memories of who he is or what has happened.