It was the patient who confessed to the murder's girlfriend but the patient wanted him to be charged as he was dying and wanted to take the blame.
The models were a) on the catwork killed by ecstacy smuggled in green body paint - she inhaled it through her lungs due to the hot air on the catwalk and b) the model under/by the truck was killed by the paint smuggler when she found him backstage getting the paint which had been accidentally delivered to the fashion show instead of going to the drug smugglers.
Hope this is OK