"Ex-FBI agent Steve Vail is more than happy to leave the Bureau behind, but they aren’t through with him yet. A group called the Rubaco Pentad is holding the FBI up for buckets of cash, with an escalating body count as leverage. The Feds are stumped. Some signs point to a corrupt agent while others lead to completely dead ends.
Vail has built a reputation for being able to find anybody anywhere. Now, with no official ties, he’s the perfect choice for this under-the-radar investigation. But as Vail well knows, going after people who use killing as a bargaining chip is asking for the worst kind of trouble."