High Quality Content by WIKIPEDIA articles! The Wonderland Gang was a group of drug dealers involved in the Los Angeles cocaine trade during the late 1970s and early 1980s; their homebase was located on Wonderland Avenue in the Laurel Canyon area. On July 1, 1981 four members of the gang died in the Wonderland murders. LAPD detectives were on record as saying the crime scene was more bloody and gruesome than that of the Tate-LaBianca murders.