The Passport Invisible is a novel written by Perley Poore Sheehan and published in 1917. The story revolves around a young American man named John Delmont who, after being falsely accused of a crime, decides to flee to Europe to start a new life. However, he soon finds himself embroiled in a web of espionage and intrigue, as he becomes entangled with a group of spies who are trying to obtain a secret formula for a powerful explosive.As Delmont navigates his way through the dangerous world of international espionage, he must use all his wits and cunning to stay one step ahead of his enemies. Along the way, he falls in love with a beautiful young woman named Olga, who may or may not be working for the enemy.The Passport Invisible is a thrilling tale of adventure, romance, and espionage, set against the backdrop of World War I. Sheehan's fast-paced narrative and vivid descriptions of European cities and landscapes make for a gripping read that will keep readers on the edge of their seats.This scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions, that are true to their original work.