A series of indeterminate deaths test the deductive powers of the CSI team, who fear that a public health emergency may be in the offing.

Meanwhile, a friendly rivalry over who will win an upcoming bikini contest takes a deadly turn.

original airdate--April 30,2009     rating--15.54 million

music--Theme song--"Who Are You" by The Who

1. "Baby Brother" by The White Stripes"
2. "Word Up" by Willis
3. "It's Nice to Know You Work Alone" by Silversun Pickups
4. "Set the Hook" by Tony Joe White
5. "Dead Shrimp Blues" by Robert Johnson
6. "The Gone Dead Train" by King Solomon Hill
7. "Hollywood" by I am the Heat