When a Marine recruiter is killed, the CSIs face a long list of suspects including anyone who opposes the war in Iraq to fellow recruiters looking to eliminate the competition. Hate mail sent to the recruiter from a soldier who thinks he killed his brother in combat leads Horatio and co. to re-investigate the case and ultimately expose a cover-up for the brother’s murder.

When an alleged member of a terrorist cell (from episode #509), on trial for aiding in a plot to blowup Miami, goes on the run after almost being gunned down by her own people who think she’s a trader, Horatio never waivers in the fact that she’s innocent until proven guilty and as CSIs it’s their job to find and protect her.