TRIO reprints three Sherlock Holmes novellas I wrote, Freud is Fixated, Marx Est Mort and My Name is Sherlock Holmes, which provide a novel (literally and figuratively) introduction to cultural studies. This book is meant to do two things: be entertaining and also teach my readers something about psychoanalytic theory, Marxist theory, and the interdisciplinary field known as cultural studies. Books such as TRIO are sometimes described as “Infotainments,” combining both information and entertainment. Each chapter is introduced by quotations of interest and I also provide bibliographies and at the end of the book, a glossary. In this book, as he tries to solve each crime, Sherlock Holmes interrogates some of the most important thinkers of the twentieth century. Which means this book is full of ideas about all kinds of things. In some cases, the dialogue comes from the writings of the thinkers Holmes is questioning. I’ve had to sacrifice my narrative line to pump as much ideational content into the stories as possible, so these novels are didactic in nature, but they are still works of fiction but of an unusual kind. I have taken some minor liberties with the punctuation and repeat myself at times in different places in different books. Teaching cultural studies by using Sherlock Holmes mysteries is an unusual way to instruct students and readers. I hope, after reading this book, you will think it was worth your effort, and mine.