A number of factors contributed to grunge's decline in prominence. Critics and historians do not agree on the exact point that grunge ended. Catherine Strong states that "... at the end of 1993 ... [,]grunge had become unstable, and was entering the first stages of being killed off"; she points out that the "... scene had become so successful" and widely known that "imitators had begun to enter the field". "Paste" magazine states by 1994, grunge "... was fading fast", with "... Pearl Jam retreating from the spotlight as fast as they could; Alice in Chains, Stone Temple Pilots and hordes of others were battling horrid drug addictions and struggling for survival." In "Grunge: Seattle", Justin Henderson states that the "downward spiral" began in mid-1994, as the influx of major label money into the scene changed the culture and it had "nowhere to go but down"; he states the death of Hole bassist Kristen Pfaff on June 16, 1994, from a heroin overdose, was "another nail in grunge's coffin."