NCIS › Season 2

S2 E22: SWAK

When Tony opens a mysterious letter thinking it's for him, a small puff of white powder comes out and releases a possible deadly virus. Soon Kate and Tony are isolated in a bio-hazard isolation room for precaution. McGee and Gibbs work to discover who sent the envelope and how to cure their friends before it's too late for them.

Air date	May 10, 2005
Runtime	44 minutes
TMDB rating	★ 7.8/10