Books like Secret Agents Four by Donald J. Sobol

Fourteen‑year‑old Alex Rider learns that his supposedly dead uncle was a MI6 operative. When the truth comes out, Alex is thrust into a high‑stakes mission to uncover his uncle’s killers and finish a dangerous secret assignment.

When eccentric millionaire Samuel W. Westing dies, sixteen heirs race through riddles, blizzards, burglaries and bombs to solve his will and claim a mysterious $10 million inheritance.

A boy transfers to a CIA-run school of espionage, where he finds out the CIA and the school have more secrets than he bargained for.

Ben prepares for spy summer camp, but a death threat from an evil organization changes everything.

Ten‑year‑olds Petra and Calder tackle a mysterious art heist when a Vermeer vanishes, using their unique skills to solve a cross‑continental scandal.

At a London boarding school for young ladies, Sophronia learns that proper etiquette masks a curriculum of espionage, intrigue, and mechanical tinkering.

When rival gangs ignite a turf war in London’s underworld, James Adams must infiltrate the most dangerous group to supply fast intelligence to the police.

Fifth‑grader encyclopedia‑savvy Leroy Brown tackles a collection of ten mysteries, leaving solutions for readers to work out at the back of the book.

When his mother dies, orphaned James Adams is recruited into the secret agency of Cherub Agents, a group of child spies trained by MI5 to tackle danger and intrigue.

Cammie Morgan and her friends race to stop the terrorist Circle of Cavan from executing a plan that could change their lives and their country.

Five unpopular elementary‑school misfits run a secret spy network, using clever gadgets to battle evil worldwide.

Lady Julia Barrowby, after her husband's death, claims her place in the elite Royal Four and faces the seductive intrigue of Marcus Ramsay, who seeks to uncover her secrets and perhaps her heart.

James, a young Cherubs agent, investigates the crook Leon and uncovers a dangerous conspiracy—only a dead 18‑year‑old boy could reveal the truth.

A technical companion to the Alex Rider series, this guide presents the blueprints and specifications of the gadgets that equip the teenage spy.

In Nazi-occupied Norway, Espen becomes a spy and a courier, rising through the ranks of the resistance.

Jacob Two-Two embarks on his first spy mission.

"With staffs that are collectively larger than the Russian army, the Big Four accounting firms are a keystone in global finance --but do they really provide stability and safety? Leading scholar Ian Gow and award-winning writer (and former KPMG director) Stuart Kells warn that a house of cards may be about to fall. Across the globe, the so-called Big Four accounting and audit firms - Deloitte, PricewaterhouseCoopers, Ernst & Young, and KPMG - are massively influential. Together, they earn more than $100 billion annually and employ almost one million people. In many profound ways, they have changed how we work, how we manage, how we invest and how we are governed. Stretching back centuries, their history is a fascinating story of wealth, power and luck. But today, the Big Four face an uncertain future - thanks to their push into China; their vulnerability to digital disruption and competition; and the hazards of providing traditional services in a new era of transparency. Surprisingly colorful and unquestionably authoritative, this account of the past, present and likely future of the Big Four is essential reading for anyone perplexed or fascinated by professional services, working in the industry, contemplating joining a professional services firm, or simply curious about the fate of the global economy"--

In a covert, government-run school closed in 1977, twelve‑year‑old Chris and his classmates sharpen their psychic powers, while twin siblings Ernest and Mort secretly train under a more sinister mentor.