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SWAK is the twenty-second episode of the second season of NCIS, and the forty-fifth episode overall.
Guest Stars: Brian Dietzen (Jimmy Palmer), Tamara Taylor (NCIS Special Agent Cassie Yates), Steven Eckholdt (Navy Cmdr. Dr. Brad Pitt), Kelsey Oldershaw (Navy Nurse Lt. Emma Ingham), Mariette Hartley (Hanna Lowell), Olivia Burnette (Sarah Lowel), Rizwan Manji (Dr. Pandy)
Tony and Kate are placed in a biohazard isolation after Tony opens up a letter which releases a mysterious powder.