$75,000 reward in 9-year-old LA double murder of Michael Tardio and Christopher Monson

(CBS/AP) LOS ANGELES - In the early morning hours of Sept. 2, 2002, two young men were found executed in a burning Mercedes SUV in an upscale North Hollywood neighborhood.

The victims were Michael Tardio, 35, a part-time model and doorman at The Garden of Eden - at the time Hollywood's hottest nightclub - and his friend, 31-year-old Christopher Monson.

Now, officials have announced a $75,000 reward for information leading to whoever committed this baffling homicide.

Tardio was dating Sandy Bentley, who had been featured in Playboy magazine alongside her twin sister. Bentley had a collection of jewelry - including an exact $250,000 replica of the diamond and ruby necklace Richard Gere's character gave Julia Roberts in the movie "Pretty Woman" - given to her by a former boyfriend, one-time Wall Street investment adviser Mark Yagalla. He was convicted in 2002 of stealing $50 million of his clients' money in a massive Ponzi scheme.

Detectives think Tardio and Monson were killed as they tried to sell the jewelry.

The murder of Tardio and Monson will be featured in this Saturday's 48 Hours | Mystery.