Sheila and Joel piece together the previous night’s events while dealing with a professional setback. Abby gets a bold new look, courtesy of Lisa.

Is a colonel the clam connection? Joel’s on a stakeout to find out. Also, Abby has a date, and Sheila doesn’t see eye to eye with her boss.

Can knowing a secret be a motive for murder? The CSI team must figure out if a change in gender is cause for the death of a showgirl. Also Lindsay…

When a woman is found dead with a bottle of pills that are lab trial samples, Lassiter and Gus, who are taking the same tap class, team up to dance…