On a bright, sunny Friday the 13th in June, a 1994 Cadillac Fleetwood Brougham limousine pulled up in front of a Beverly Hills mansion that was obscured by a chain-link fence. Across the street, an open-top tour bus drove by, with its passengers craning their heads in the direction of the funeral limo.

The landmark the vehicles were visiting? The home where Erik and Lyle Menendez killed their parents more than three decades ago.

The limo stopped at the mansion as part of the Westside Gory tour, a three-hour true crime experience that debuted this summer from Grave Line Tours. The limo’s route stretches from Hollywood to Brentwood and back, with a guide chronicling two of the city’s most infamous crime stories: the Menendez killings and the murder trial of O.J. Simpson.

“This is the kind of perennial case, slash cases, that grabs the attention” of true crime enthusiasts, said Adam Levine, the owner and founder of Grave Line Tours.

The Menendez brothers, who killed their parents in their Beverly Hills home in 1989, were ultimately convicted of murder in 1996 and sentenced to life in prison without the possibility of parole. A year before, the football star O.J. Simpson had been acquitted in the killings of his ex-wife, Nicole Brown Simpson, and her friend Ronald L. Goldman.