Here's a bit of an offbeat, albeit maudlin activity for your next vacation in LA. If you've always been a fan of film noir, and if you've always had secret aspirations to become a PI, you might want to consider one of the Esotouric Mystery Bus Tours.

Since January 1947, one iconic murder mystery has lingered unsolved at the forefront of the American imagination, with dozens of books, films and websites dedicated to solving the slaying of Beth Short, the Massachusetts girl who came to Hollywood hoping to make it, and ended up cut in two in a vacant lot. Suspects in the Black Dahlia murder have included L.A. Times publisher Norman Chandler and Orson Welles, twisted drifters and more than one writer's father, but still the mystery abides.

When Esotouric launched their offbeat L.A. crime tours in spring 2007, The Real Black Dahlia was an immediate hit, and has remained their most popular tour. Esotouric recently updated the tour, and it now begins at the historic Biltmore Hotel lobby where Beth Short spent some of last moments before vanishing. Among the new tour stops is a visit inside the original Greyhound Bus Terminal where Beth checked her bags, bags which would become the King Tut's Tomb of true crime reportage when located by newspapermen. Inside the moody, spooky Greyhound Terminal, now a nest of tiny shops, tour guides will share the newly discovered tale of the building's lady ghost. Is it Beth, or some other lost soul?

The Real Black Dahlia tour dedicates itself to revealing who victim Elizabeth Short really was by exploring her life in Los Angeles from mid 1946 to her January 1947 murder through examination of the police investigation and news coverage. The various theories are up for discussion during the onboard Q&A sections, and the hosts share their idea of who the killer might have been, but the focus is firmly on the 22-year-old woman whose death continues to fascinate. Along the way, passengers will explore the social history of postwar Los Angeles and its lively downtown scene and learn the role the city played in Short's mysterious death.

The tour begins at the Biltmore Hotel in Downtown Los Angeles, where Beth Short went after checking her bags at the Greyhound Terminal. Many people mistakenly believe this was the last place she was seen alive. Passengers will tour the beautifully restored hotel before heading south, to the low rent Olive Street bar where she met her murderer. The Downtown portion of the tour includes the Examiner newspaper offices, where the crime became myth, and the Figueroa Hotel, where Short stayed in happier times.

The bus then heads west towards Leimert Park and the formerly vacant lot where Short's bisected body was discovered on January 15, 1947. Also in this neighborhood, passengers visit the site of another unsolved 1947 kidnap-murder and the home of Dr. Walter Bayley, who has emerged in recent years as the most compelling suspect, with his personal ties to Beth Short's family and the crime scene, and the surgical skill needed to bisect the body. The tour includes a cop-approved snack stop for Krispy Kreme donuts near the body dump site.

Also featured: a special presentation from cosmetics historian Joan Renner exploring Beth Short's unusual proto-goth make up, so different from the popular girl next store look of 1947, and a key to understanding her psychology.

Passengers on this eye-opening and informative tour will leave with a new understanding of the Black Dahlia case and what it was like to be a single woman in 1940s Los Angeles. It is highly recommended for natives and newcomers, crime and history buffs and anyone who likes to seek out the unexpected.

Cost is $58 per person. For details, call 323-223-2767