By the Light of the Study Lamp

I Uncle Ned's Gift II The Secondhand Shop III The Peril of the River IV A Cry for Help V Franklin Starr VI The Gypsylike Woman VII Back at Starhurst VIII The Substitute Lamp IX Fay Violette X The Inquisitive Plumber XI A Strange Interview XII The Plumber Again XIII The Hidden Watcher XIV A Malicious Rumor XV The Pearl Ring XVI The Stolen Car XVII The Campus Spy XVIII Trying to Help XIX The Secret Panel XX The Clue of the Watch XXI The Intruder XXII Fay Violette Disappears XXIII Shadowed XXIV The Jewel Case XXV The Plumber's Disguise