Robert Edward Maury (born February 24, 1958) is an American serial killer who strangled three women to death in Shasta County, California, from 1985 to 1987.

After each murder, Maury anonymously called into a tip line to tell detectives where the bodies were located, leading to him being dubbed The Tipster Killer.

[4] On June 19, an anonymous man called the Secret Witness Program of Shasta County claiming to have information leading to Weeden's whereabouts, but inquired to know how much he would receive in compensation.

After an exchange over the phone, Shirley Landreth, who answered most of the incoming calls for the Secret Witness, agreed to the caller's proposal, and he gave precise directions to a wooded area along Bechelli Lane near South Bonnyview Road in Redding.

[4] After the discovery of her body, the Secret Witness Program received several more calls from the anonymous man, who claimed at one point the killer was named Robert or Bob.

[4] But on August 8, an anonymous man called the Secret Witness Program claiming to have found a body but would only reveal the location if he were to receive a certain amount in reward money.

Nine days later, the man made several more calls to Secret Witness, claiming the body was of a woman named Gretchen Olston, and that she had been killed over a month prior.

[4] He gave specific directions to investigators, and they were dispatched to the location, which was a remote, bushy grassland near Palm Avenue and Monte Vista Road.

[12] Fire Marshall Roy Del Carlo, who was wired, posed as the chairman of the Secret Witness board and met with Maury in a series of meetings.

[18] In 2003, Maury attempted to appeal his sentence because multiple errors occurred during the trial, including the fact the jury had been told about his calls to the hotline, something that the Secret Witness Program, which had promised to keep his identity private, violated his 4th amendment rights.

[2] The court stated however that the program is allowed to pass on the information to law enforcement who are involved in an investigation, and so, the appeal was rejected, and he remained on death row.