Sean Murphy is back, and now he has been transferred to San Diego where he meets new colleagues and friends and discovers life can be complicated, even deadly, in sunny southern California. As Sean and his family settle into their new surrounding a neighbor introduces them to his business partner who turns out to be much more than a certified public accountant. In fact, as events progress, Sean learns of second and deadly occupation. One of Sean’s new job responsibilities includes monitoring international terrorist activities on the US Mexican border. Circumstances lead to the deduction there is a plan by terrorists to sneak a biological contagion across the border. Sean must discover how this will take place and how to prevent it. During this process there are murders, an earthquake and more double crosses than you can keep track of. Find out how successful he is in preventing a pandemic and what becomes of the perpetrators.