Latest Sigma Force Novel 'The Tsar's Library,' Featuring Elite U.S. Defense Department DARPA Unit, to Be Released July 2nd! Over 20 Million Copies Sold Worldwide.

Sigma Force Series

Takeshobo Co., Ltd. (Headquarters: Chiyoda-ku, Tokyo; President: Jun'taka Miyata) will release the Japanese edition of "Arkangel" by James Rollins, originally published by William Morrow in the U.S. in August 2024, as "The Tsar's Library Vol. 1 & 2" on July 2, 2026 (Thu).

This book is the latest installment in the Sigma Force series, which began publication in the U.S. in 2005 and has sold over 20 million copies worldwide. It has also been published in Japan since 2007 in book format and since 2012 in paperback, making this the 17th title in the highly successful series.

Sigma Force operates under the jurisdiction of DARPA (the Defense Advanced Research Project Agency), which is responsible for research and development within the U.S. Department of Defense. DARPA's mission is to manage, direct, and protect new technologies and research. Its members are "scientists trained to kill," excelling in both intellect and physical prowess. They tackle strange incidents occurring around the world—incidents often rooted in history and impacting modern science. History x Mystery x Science—this is a top-tier mystery-adventure series that challenges historical enigmas with science.

Author James Rollins transitioned to writing after a career as a veterinarian. In addition to the Sigma Force series, he has written the novelization of "Indiana Jones and the Kingdom of the Crystal Skull" and the epic fantasy series "Moonfall Saga," including "The Crownless King" (also available from our company).

"Never awaken that which slumbers, nor venture where it lies." —From the epitaph of a 1764 Arctic expedition

Latest installment in the best-selling series, translated in 35 countries worldwide with over 20 million copies sold globally!

The legendary book hidden by Ivan the Terrible.

The warning encoded in a cipher by Catherine the Great.

Bombings in Moscow and the abduction of comrades—

Sigma confronts the fanaticism of the Russian Orthodox Church, which proclaims "Third Rome," and an "unknown threat" that could fundamentally alter the geopolitics of the Arctic region!

[Highlights]

The long-standing relationship between Gray and Seichan reaches a temporary conclusion. Including the remnants of the Guild, this arc is temporarily complete. However, with the emergence of a new threatening organization, the series is planned to continue.

Book cover for "The Tsar's Library Vol. 1"

Sigma Force Series 17 The Tsar's Library Vol. 1

By James Rollins / Translated by Ken Kuwata

Format/Pages: Paperback / 416 pages

Price: ¥1,320 (tax included)

Release Date: July 2, 2026 (Thu) [Takeshobo Detail Page] https://www.takeshobo.co.jp/book/b10167957.html [Synopsis] An archaeologist from the Vatican, visiting Moscow for an investigation, is murdered. A photograph of pages from an ancient book is attached to an email he sent just before his death. Upon receiving the email, Sigma Force determines it relates to the golden library hidden by Ivan the Terrible and dispatches team member Gray Pierce to Moscow. As Gray and his team work to decipher the mystery set by Catherine the Great, they are confronted by the Archangel Society, which believes in Russia's destiny to become the Third Rome. Furthermore, the Neo-Guild, led by Valya Mikhailov, a nemesis to Sigma and Seichan, joins the opposition. The battle for Sigma Force's survival unfolds from Moscow to the Arctic, with "wonders and horrors" awaiting them.

Book cover for "The Tsar's Library Vol. 2"

Sigma Force Series 17 The Tsar's Library Vol. 2

By James Rollins / Translated by Ken Kuwata

Format/Pages: Paperback / 456 pages

Price: ¥1,320 (tax included)

Release Date: July 2, 2026 (Thu)

[Takeshobo Detail Page]

https://www.takeshobo.co.jp/book/b10167955.html

[Synopsis]

Using the golden library and a medieval map found within, Gray and his team pinpoint the location of the legendary northern continent Hyperborea. However, a faction of the Russian military, influenced by the Archangel Society, is also pursuing them. With communications cut off due to a solar flare causing a magnetic storm, a desperate struggle for possession begins in the Arctic to prevent Russia from expanding its territory and acquiring resources beneath the ice. What does the warning left by their predecessors—"Never awaken that which slumbers"—mean? At the destination Gray and his team reach, unimaginable "wonders and horrors" await. Who will survive: Sigma, the Russian military, or the Neo-Guild? Or is there no avoiding the outbreak of a war involving the entire world and the end of days, with all destined for destruction?

[Sample Reading]

What is Sigma Force (Sigma Force)?

They are scientists trained to kill. Sharper than James Bond, twice as dangerous.

The symbol Σ (Sigma) is used in mathematics and represents the Greek letter sigma. It signifies the combination of all parts, the integration of different elements, and the sum of all things. For the U.S. Department of Defense, Sigma Force means a top-secret unit composed of former special forces soldiers. Elite individuals with genius-level IQs are assembled and receive specialized training in fields such as physics, geology, archaeology, botany, physiology, anthropology, electrical engineering, genetics, statistics, chemistry, and molecular biology. Members possess the highest physical capabilities and experience from special forces, combined with the intellect of genius scientists. The minds of geniuses and bodies of steel. The sum of human capabilities. That is Sigma Force. They are scientists trained to kill.

Origins and Mission of Sigma Force

Sigma Force operates under the jurisdiction of DARPA (the Defense Advanced Research Project Agency), which is responsible for research and development within the U.S. Department of Defense. DARPA's mission is to manage, direct, and protect new technologies and research. Their unwritten rule is to "be the discoverer." In a new world where scientific and technological advancement is prioritized over military might, knowledge is the true weapon. Dr. Sean McKnight proposed the necessity of personnel who possess knowledge of science and technology as well as military training, capable of securing and protecting classified technology with 100% accuracy, leading to the creation of Sigma Force. The core mission of this organization is investigation and acquisition. They are an off-the-books team sent into high-risk situations to protect U.S. interests, from national security to the acquisition of new technologies. Unlike Delta Force, which was founded as an anti-terrorist unit, Sigma Force was formed with the objective of protecting and maintaining U.S. superiority in the field of science and technology. Dr. McKnight, the founder of "Sigma Force—the United States must not fall behind other nations in technological advancement—" has been promoted to Director of DARPA, and the current commander of Sigma Force is Dr. Painter Crow. Painter Crow has a proven track record of bravely thwarting an attempt to hijack Sigma Force in the deserts of Oman.

◉ Author Profile

James Rollins

Born in Illinois in 1961. He began his writing career in the late 1990s and introduced "Sigma Force" in his 2004 work "Devil May Cry," which was then fully developed into a series starting with "Sandstorm" in 2005. Since then, he has released titles such as "Map of Bones" and "The Last Oracle," leading up to "The Tsar's Library," marking the seventeenth installment in the series (eighteen if "Devil May Cry" is included). He is renowned for his meticulously constructed stories that blend historical facts with the latest research findings and scientific technology, and is considered one of America's top authors for his action scene depictions. Other works include two titles in the "Tucker Wayne" series, a spin-off from the Sigma Force series featuring former soldier Tucker Wayne and his military dog Kane as protagonists (co-authored with Grant Blackwood): "The Beginning of the End" and "The Turing Code"; and three titles in the fantasy novel series "Moonfall Saga": "The Starless Crown," "The Cradle of Ice," and "A Dragon of Black Glass." James Rollins Official Website

https://jamesrollins.com/

Sigma Force Series

0. Devil May Cry

09. Darwin's Watch

01. Sandstorm

10. The Last Oracle

02. Map of Bones

11. Black Order

03. The Judas Strain

12. The Devil Colony

04. The Romanov Legacy

13. The Orphanage

05. Blood Line

14. The Kill Switch

06. The Jefferson Key

15. The 14th Colony

07. The SIGMA Force: Endgame

16. Crucible

08. The Tomb of Genghis Khan

17. The Tsar's Library

❏ Sigma Force Series Special Site

https://www.takeshobo.co.jp/sp/shigma_force/

Takeshobo Co., Ltd.

Established in 1972. A publishing company that handles specialized magazines such as the Mahjong manga magazine "Kindai Mahjong," 4-koma manga magazines, books, comics, photo collections, DVDs, and more.

https://www.takeshobo.co.jp/