Summary:
"Nick Carter Stories No. 145, June 19, 1915: An Unsolved Mystery; Or, Nick…" is a detective fiction story likely written in the early 20th century. The plot centers around the renowned detective Nick Carter as he is summoned to Washington, D.C. to investigate the strategic theft of a young government's expert engineer's plans—the loss of which poses a severe threat to national security. The opening of the story introduces Nick Carter in the midst of a secretive and urgent communication with Chief Welden of the U.S. Secret Service. Carter learns that important military plans have been stolen from engineer Harold Garland, who had been working on classified fortification projects. Suspicion arises around foreign spies, and Carter must navigate the complexities of the case to ascertain who may be involved in the conspiracy, while also confronting the looming danger of national exposure. The narrative sets the stage for a series of high-stakes inquiries and stealthy maneuvers, promising an engaging mystery for fans of classic detective tales. (This is an automatically generated summary.)