Assassin, vigilante or serial killer?Vadim Aleyev, President of the Russian Federation is out of control. He's pushing his country, his people and the world to the brink of a catastrophic war.Around the globe, world leaders are worried, yet no one seems prepared to act. Then one nation unleashes its most fearsome Lachlan Byrn.Assassin, vigilante or serial killer? Byrn has a passion for his work that transcends the rules of engagement. He gets up close and personal with his victims... very close, very personal and he's exceptionally deadly.As the clock ticks, can one man with a tenuous grip on his own sanity, achieve the unachievable?If you enjoyed Mark Greaney's The Gray Man and Vince Flynn's Mitch Rapp, you'll love this action-packed thriller from Amazon best selling author Mark Mannock.What readers are saying about the Lachlan Byrn and "This explosive, exciting story tells what an elite assassin goes through to remain at the top. and " and "My favorite Mark Mannock book yet!! and " and " A great, intense story. and "