Elusive Isabel

by Jacques Futrelle

"Elusive Isabel" by Jacques Futrelle is a spy novel published in 1909. Set in Washington, D.C., it follows Isabel Thorne, a half-British, half-Italian agent working for the Italian Secret Service. She must secure signatures on a dangerous international compact that could shift world power to Latin countries. American Secret Service agents race to stop the conspiracy, but agent Grimm complicates matters when he falls in love with the beautiful enemy spy he's sworn to capture.