"Inter-what?' When advertising executive Conrad Maddox returns from a redeye flight and finds a mysterious locker key waiting in his rental car, he discovers a briefcase loaded with guns and money. Several hours later, his entire life tumbles down a rabbit hole when he meets Dandine, owner of the case and former contract assassin for a shadowy organization called Norco, which is now out to nail both of them.

"Internecine' means conflict, mutual destruction, and slaughter--or, as Dandine tells Conrad, they are now inadvertently at play in a field of "terrorism, counter-assassination, military coups, dirty tricks, Watergate, spy vs. spy, murky secret organizations, that sort of thing.' A world in which being innocent can't save you, the police can't help you, and your only hope of getting out alive is to risk unheard-of dangers against opponents with nearly unlimited power. To free themselves from the spider web of black ops, murder, madness and betrayal, Dandine and Conrad must delve ever-deeper into the spiraling, dangerous maze that is Norco, where everyone seems to be in on the most lethal of games... except you.