Some secrets are best left
at the bottom of the ocean.
A JACK RYAN JR. NOVEL
9-1-26
About Jack Stewart
Jack Stewart is the New York Times Bestselling author of the Battle Born series (Declared Hostile 2025), the W.E.B. Griffin Presidential Agent series (Direct Action 2025), the Tom Clancy Jack Ryan, Jr. series (Pressure Depth 2026), and the co-author of the Silent Horizons series with Chad Robichaux (Riptide 2026). Jack is a retired Navy fighter pilot with over two decades of service and multiple combat deployments, including an assignment to the Joint Special Operations Command. He is a graduate of the U.S. Naval Academy, U.S. Navy Fighter Weapons School (TOPGUN), and a captain with a major U.S. airline. Jack lives with his family in Dallas, Texas.
About Pressure Depth
Some secrets are best left at the bottom of the ocean. But since that’s not in Jack Ryan, Jr.’s nature, he’ll battle all of China to stop them from finding a weapon of immense destructive power in the latest entry in the #1 New York Times bestselling series.
Praise for Jack's Work
"Unknown Rider is a stunning military thriller strongly evocative of classic Clancy and Dale Brown. Intensely paced and skillfully plotted."
—Mark Greaney, #1 NYT bestselling author of The Gray Man
“A high-octane and adrenaline-powered thriller... Strap in and hold on!”
—Jack Carr, #1 NYT bestselling author of the James ReeceTerminal List series
"Jack Stewart's writing catapults readers through Unknown Rider from page one. From espionage to dogfights... this is a Mach 5 debut."
—Brad Taylor, NYT bestselling author of the Pike Logan series
"Stewart firewalls the throttles with the first sentence and keeps the afterburners howling until the end. Take a deep breath and hold on tight."
—Don Bentley, NYT bestselling author of Vince Flynn Capture or Kill and Tom Clancy Weapons Grade
"Jack Stewart explodes onto the thriller scene with technical expertise and powerful prose reminiscent of the very best of Tom Clancy."
—Andrews & Wilson, NYT bestselling authors of Tom Clancy Defense Protocol and the Sons of Valor series
"With the authenticity that only an ex-fighter jock like Jack Stewart could write... Raw, real, and razor-sharp. This one hits hard!"
—M.P. Woodward, NYT bestselling author of Red Tide, a Novel of the Next Pacific War, and the Tom Clancy Jack Ryan Jr. series
