Homeland Security Investigators Pope Dades and Felix Jbarra have been partnered for six months and the excitement on and off the job keeps getting better. Working together every day is generally routine but when the partners are assigned to supplement the Secret Service on a VIP protection detail, things really begin to heat up. An alternative energy conference is being held in Los Angeles. When Felix and Pope learn they'll be bodyguards to a Saudi Arabian prince, they're expecting rides in fancy limousines, a stay at the world-famous Beverly Wilshire Hotel, and exotic food. What they don't expect is being once again thrown into the line of fire... literally. Someone has put out a hit on Prince Ali ibn Abd Pasha and the killers want it carried out on US soil to embarrass the Americans in retaliation for US news coverage over the murder of one of their journalists late last year. Felix and Pope only learn of the danger to the prince when a Secret Service agent friend is nearly killed. Pope and Felix dive headfirst into another exciting case but when they learn the man they're guarding might be involved in arms trafficking because of ties to Mills Lang, they are forced to once again call on their buddies at the ATF. Action, intrigue, and danger abound in the thrilling conclusion of the Thin Blue Line series.