Hunt for the Bamboo Rat (Prisoners of the Empire #4) by Graham Salisbury
Zenji Watanabe was born in Hawaii. He’s an American, but the Japanese wouldn’t know it by the look of him. And that’s exactly what the US government is counting on.
Because he speaks both English and Japanese perfectly, the army recruits Zenji for a top-secret mission to spy on the Japanese. If they discover his true identity, he’ll be treated as a traitor and executed on the spot.
As World War II boils over in the Pacific, Zenji is caught behind enemy lines. But even though his Japanese heritage is his death warrant, it’s also his key to outwitting the enemy and finding the strength to face the terrors of battle, the savagery of the jungle, and the unspeakable cruelty of war.