With the help of his friend, JR Diminski, retired FBI profiler Sean Kruger rescues a female graduate student after she is kidnapped from the university campus where he teaches. He finds the abduction too familiar. From 1999 through 2002 six female college students vanished, without a trace, from four different college campuses across the country. As the lead FBI investigator on those now cold cases, his failure to find the women and the person responsible still haunts him.

FBI Profiler Special Agent Sean Kruger is called back to the FBI from his special task force when his long-time friend and current Deputy Director of the FBI, Alan Seltzer, is brutally murdered during his morning bike ride. As Kruger is thrown into the investigation, he quickly finds out Alan was not the first high-profile African American to die in a suspicious manner. Now with the loss of his friend and his pending retirement on his 57th birthday, Kruger must endure a dark trail as he rushes to find Alan's murderer before he is forced to leave the FBI.

MIT graduate student, Danny Barton, is a quiet man. A man more comfortable pursuing academic achievement than monetary success. In a quest to finance his academic pursuits, he takes a position within a political campaign to analyze voting data. It will be a fatal decision.
When a hit-and-run accident robs Danny of his future, retired FBI profiler Sean Kruger is asked to investigate. As Kruger digs into the young man’s past, he finds a brilliant mathematician who has developed a system for predicting election results.

Somebody wants Michael Wolfe, and his ex-Mossad girlfriend, Nadia Picard, dead. When an attempt to assassinate them in Barcelona, Spain goes awry, they manage to find their way back to Wolfe’s rustic property in remote southern Missouri unscathed. Not one to hide from a threat, Wolfe aggressively starts using his training and skills to find out who tried to eliminate them in Barcelona, but more importantly - why.

A young bride’s life is snuffed out on December 2, 2001 in Haifa, Israel, when a Palestinian suicide bomber destroys a bus. One hundred and ninety-three souls are lost on March 11, 2004, when a coordinated bomb attack occurs on the Cercanías commuter train system in Madrid, Spain, with a Scottish SAS Sergeant Major’s fiancée among the dead. What do these two events have in common? An Iranian terrorist who goes by the name Mohammad al-Qaedi. Fast forward 20 years, Michael Wolfe and Ian McGill uncover the identity of the person responsible for the deaths of their loved ones.

This is the box set of the Sean Kruger series, books 1 through 3: The Fugitive's Trail; The Assassin's Trail; and The Imposter's Trail.

Over the Indian Ocean, a Malaysia Airline jumbo jet drops from radar. Three hundred and twenty-seven souls disappear with it; a woman in Rockford, Illinois is brutally murdered. Unrelated news events? Retired FBI agent Sean Kruger doesn't think so. He suspects it's the work of serial killer Randolph Bishop. Now a college professor, Kruger has tried to live with the mistake he made while investigating Bishop six years earlier. It looks as though the only man to elude him, in his 25-year tenure with the FBI, has returned to seek vengeance.

Homicide detective Ryan Clark has a problem. A prominent businessman has been assassinated by a drive-by shooting. Two weeks earlier another man, in the same industry, was shot and killed. He suspects the assassinations are related and calls an old friend with the FBI.

In the lobby of a prestigious Wall Street investment firm, one man is dead and another seriously injured. The man accused of the crime is now a fugitive. When the Director of the FBI personally orders Special Agent Sean Kruger to New York City to find the fugitive, Kruger questions the reason. Told to shut up and do his job, he starts looking into the case. What he finds is troubling. Eyewitness accounts seem contrived with little variance between individual testimonies. The more he hears, the more he feels someone is manipulating the story.

In ancient texts, there are stories about men who struck from the shadows, seemingly beyond the reach of death itself. These men were considered part angel, part demon. Their loyalty was to their families, their friends, and their kings. You crossed these men at your peril. And once crossed, there was no crossing back. They were fearless; men of honor who have been known throughout history by different names: Spartan, Viking, Samurai.