Mark Slotkin built the 722 North Elm Drive house in 1984, and lived there from 1984 until 1988. He sold the house to the Menendez family.
Slotkin was a witness in both trials, a defense witness in the first and a prosecution witness in the second.
In the first trial Slotkin testified, among other things, that he became friends with the Menendez brothers. Slotkin went to The North Elm Drive house a day or so after the killings where he met the brothers. This was the first time he had ever met them. Slotkin wanted to express his condolences. The brothers were in the driveway courtyard, Slotkin went up to the them, told them he was sorry, asked them to call him if he could help them in the future as a friend and to give fatherly advice or business advice. Lyle appeared very sad. Erik was grief-stricken.
About two weeks later the brothers called Slotkin and made an appointment. The three met and talked for a couple of hours. Slotkin offered some suggestions for the brothers, who asked Slotkin what direction he thought their lives should go in after this tragedy. Slotkin advised them to become professional tennis players. His advice was based upon fact that the brothers told him they had world class ability. Slotkin told them they should exploit that ability. Erik talked about entering UCLA. Slotkin told Erik he should enter UCLA and that both brothers should get a professional coach. Lyle wanted to play tennis, but Erik was vacillating between playing tennis and going to school, and Slotkin told Erik he should do both. Both brothers needed transportation. Slotkin and Erik discussed what type of car to buy and decided on a jeep. They also discussed where the brothers ought to live.
None of the above testimony was repeated in the second trial. There, Slotkin was called by the prosecution and testified he accompanied Erik to Lake Tahoe a few months after the killings. On the trip, Erik was gambling with large amounts of money, and Slotkin had to loan Erik five to eight thousand dollars to cover Erik’s gambling debt.
Slotkin was interviewed by Detective Les Zoeller and prosecutor Carol Najera on March 30, 1994. According to a motion filed by the prosecution on January 18, 1995, Slotkin told Zoeller and Najera that he spoke to the Menendez brothers approximately 50 to 100 times after their arrest, the last time being approximately February or March of 1994.
According to the prosecution motion…
Slotkin said that he spoke to Erik about not appearing sad or remorseful about the killings. Erik told him, “We made a mistake at the original arraignment, and we’re going to do better at that.”
After the arrests, Slotkin would play devil’s advocate and try out defenses with the brothers. He said that he could not understand why they did not use the confrontation between Jose and Craig Cignarelli in which Jose threatened to kill Craig. Slotkin explained to the brothers that he thought a good defense would be to say that Erik thought that his father was going to kill him because he was jealous of a homosexual relationship between Erik and Craig. Erik said that using that defense would be hard, and that Craig would deny it.
Slotkin said that he once spent an hour to an hour and one half discussing possible defenses with Erik. Erik would sometimes tell him, “That’s a good point, I’ll bring it up with my lawyer.” In a later conversation, Slotkin asked Erik, “Why would she be filling out college applications, if she was planning to kill you? How are you going to get out of that? Killing Kitty?” Erik responded, “Well that’s a problem, but we’re working on that.”
Slotkin was called to testify at a hearing in late January 1995.
Los Angeles Times: Menendez Friend Says He Suggested Sexual Revelation