Dalton, accused of torturing and murdering Irene ("Melanie") Louise May on June 26, 1988, at a mobile home park in Live Oak Springs, California, was arrested on May 14, 1992. Dalton and three others, Mark Lee Tompkins, Sheryl Ann Baker, and another man known only by the name "George," were alleged to have used various weapons to commit a torture-murder: a cast-iron frying pan, a knife, and a syringe filled with battery acid. The night of the alleged murder, when a sheriff's deputy was called to the same mobile home residence on a burglary call, he reported no evidence of a burglary or any criminal activity other than the resident, JoAnn Fedor, was high on
methamphetamine. He searched inside and outside the residence and noted in his report the resident was a "
5150" police code for mentally incapable of comprehending reality. No weapons nor blood evidence was recovered; there was no physical evidence for the jury to consider. (trial transcripts: p. 2738–70, CR NO. 135002). ==Trial==