Grant Blackwood

CIA Agent Briggs Tanner is fighting bioterrorists in the Alps in this thriller by the #1 New York Times–bestselling author of Tom Clancy Duty and Honor. Dinaric Alps, Bosnian region of Austrian Hungarian Empire, 1918. When four Allied soldiers discover a biological weapon that could devastate the world, they take a vow to keep it from falling into the wrong hands. Ever since, the deadly substance-code-named Kestrel-has been guarded by the descendants...

One Man. Covert agent Briggs Tanner doesn't like coincidences. In his business, they always mean trouble. So when a man is professionally assassinated right in front of him, Tanner wants answers. One Mission. Who pulled the trigger and why? And what is the mystery behind the key the man clutched in his dying hand-the key that Tanner now possesses? One War Without End. His search will lead him on an international trail, city to city, from the...

Jack Ryan Jr. is caught in the cross-hairs of a would-be tyrant in this exhilarating thriller in Tom Clancy's #1 New York Times Jack Ryan, Jr., is on his own. He's been ousted from his position at the Campus, the off-the-books intelligence agency that was set up by his father, the President. As if that's not bad enough, someone is out for Jack‘s blood. The police think that he was just the victim of a mugging, but he knows a professional assassin...

-- Using clues found on the now dead assassin, Jack pursues the investigation, following a growing trail of corpses to the European Union's premier private security firm, Rostock Security Group, and its founder, Jürgen Rostock-a former general in the German Special Forces Command. Rostock is world-renowned as a philanthropist and human rights advocate. But Jack knows him from a Campus mission revolving around a company linked to RSG-a mission that...

From bestselling authors James Rollins and Grant Blackwood, the first installment in an exciting new thriller series based on the Sigma Force novels featuring former Army Ranger Tucker Wayne and his partner, Army working dog Kane, introduced in the New York Times bestseller Bloodline and the e-original story "Tracker." Former Army Ranger Tucker Wayne and his military working dog Kane are recruited by Sigma Force to extract a Russian pharmaceutical...

Jack Ryan, Jr. and his Campus colleagues John Clark and Ding Chavez, go after a vicious terrorist mastermind--the Emir--and they will bring him in ... dead or alive.

The husband-and-wife team of Sam and Remi Fargo are used to hunting for treasure, but not for people--until an investigator friend of theirs goes missing, and they promise to search for him. What they discover, however, will be beyond anything they could have imagined. Available in a tall Premium Edition.

"On a routine intelligence gathering mission in Tehran, Jack Ryan, Jr., has lunch with his oldest friend, Seth Gregory, an engineer overseeing a transcontinental railway project. As they part, Seth slips Jack a key, along with a perplexing message. The next day Jack is summoned to an apartment where two men claim Seth has disappeared--gone to ground with funds for a vital intelligence operation. Jack's oldest friend has turned, they insist. They leave...