There are 8 books in the The Nicholas Linnear series. The newest book is The Oligarch's Daughter which came out in 2016.

In this New York Times–bestselling thriller, a martial artist’s past returns to haunt him—in the form of a murderous ninja.
Ā 
Raised in Japan by a British father and a Chinese mother, young Nicholas Linnear felt at home only in the dojo, where he gave himself over to mastering ninjutsu—the ancient…
When you buy books, we may earn a commission that helps keep our lights on (or join the rebellion as a member).

4
The Kaisho

Book cover of The Kaisho
In order to protect his father's friend, Nicholas Linnear becomes unwittingly entangled in the Japanese underworld, and the Ninja enters a world of passion and deadly deception. 150,000 first printing. 75,000 ad/promo.

5
Floating City

Book cover of Floating City
Seeking to destroy the Torch, an evil tool used for wanton destruction by the bloodthirsty leader of Vietnam's Floating City, Nicholas Linnear must confront his own personal demons in order to reach his target. 90,000 first printing.

6
Second Skin

Book cover of Second Skin
The suspense master behind Robert Ludlum’sā„¢ Jason Bourne thrillers, New York Times bestselling author Eric Lustbader brings a riveting epic adventure to an explosive conclusion, as Nicholas Linnear takes on his most formidable enemy.

After the apocalyptic destruction of Floating City, Linnear’s sworn nemesis has fled the ruined Vietnamese blood…

7
The Death and Life of Nicholas Linnear

Book cover of The Death and Life of Nicholas Linnear
A new story featuring the legendary modern-day ninja, from a #1 New York Times–bestselling author.
This was to be one of the greatest nights of Nicholas Linnear's life—a crowning achievement. After taking over his family's company and quadrupling its size, he has gambled it all on a liquid natural gas…

8
The Oligarch's Daughter

Book cover of The Oligarch's Daughter
Nicholas Linnear, hero of New York Times–bestseller The Ninja, returns in an all-new adventure of intrigue, deceit, and death
Returning to Tokyo after many years, Nicholas Linnear—the ninja—must make a deal with the devil if he is to maintain control of his newly launched shipping concern. The exiled Russian oligarch…