Armenian-born Aramazd Andressian was lying semi-conscious 30ft from his petrol-soaked BMW when LAPD officers found him in South Pasadena… 

After the trip to Disneyland on April 15th, 2017, Andressian said, he drove to the lake and smothered his five-year-old son Piqui on the back seat of the BMW with a sweatshirt he’d left in the car. Piqui was asleep when his father rammed the shirt over his face.

Andressian thought he was dead, then the little boy twitched and vomited and “I had to kill him again.”

He said he sat in his car overnight with his Piqui’s corpse for around eight hours. After Andressian’s confession – two months later – the boy’s skeletal remains were found, roughly covered by brushwood in undergrowth, 50ft from a car park at Lake Cachuma.

He had changed his son’s body into his pyjamas and propped him against a tree...