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Zero Drop : An AJ Docker and Banshee Thriller - Gary Gerlacher

Zero Drop

An AJ Docker and Banshee Thriller

By: Gary Gerlacher

Hardcover | 3 December 2026

At a Glance

Hardcover


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Available: 3rd December 2026

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"Zero Drop delivers a shot of pure adrenaline with stakes that are off the charts. This thriller hits hard, and there's no discharge until the final page." -Jack Stewart, New York Times bestselling author of Alpha Strike and the Tom Clancy Jack Ryan, Jr. series

"The people who did this are dead men walking."

ER doctor AJ Docker wanted a quiet day on the water. Instead, he and his retired police dog, Banshee, become first responders when a nearby boat explodes off the coast of San Diego. Two dead Navy SEALs and one mysterious female survivor turn an ordinary rescue into a murder investigation with national-security stakes.

The survivor vanishes before police can question her, and AJ soon finds himself caught between detectives, covert operators, and a growing terrorist threat. As the body count rises, AJ and his friend Rick are drawn deeper into a labyrinth of classified missions, revenge, and betrayal. The truth behind the killings reaches far beyond the marina, and Doc and Banshee won't rest until they stop the killer.

Fast, sharp, and packed with tactical action, medical realism, and canine heroics, Zero Drop throws AJ and Banshee into one of their most explosive cases yet.

Industry Reviews

"Zero Drop delivers a shot of pure adrenaline with stakes that are off the charts. This thriller hits hard, and there's no discharge until the final page." -Jack Stewart, New York Times bestselling author of Alpha Strike and the Tom Clancy Jack Ryan, Jr. series

"From its explosive start to final twist, Gerlacher's latest Doc and Banshee action-driven thriller keeps you guessing. Filled with complex, layered characters, Zero Drop is a clever, unpredictable, compulsive read." -Niamh McAnally, author of Flares Up

"If you enjoy thrillers with a unique hero, a solid whodunit, and plenty of action, Zero Drop is worth your time." -Leah Miles, author of award-winning romantic suspense, Baby ConSEALed

"Zero Drop is another action-packed medical thriller that takes you along for the ride with Doc and Banshee." -Lena Gibson, bestselling author of the Love and Survival series

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