Case 302: The De Gruchy Family
Casefile True Crime
Deep Dive
Why were detectives initially suspicious of Matthew DeGrucci?
His alibi had inconsistencies, and he was the last known person to access the car with the suspected murder weapon.
What evidence suggested Matthew DeGrucci might be involved in the murders?
His DNA was found on carpet tufts, hallway tiles, and the wall above his mother's bed; his fingerprints were on the jerrycan of petrol; and a note with his handwriting was found in a dam.
Why did Matthew DeGrucci's girlfriend's story raise suspicions?
She said Matthew called at 8pm but didn't arrive until 11pm, putting him at home during the estimated murder time.
What was the significance of the note found in the dam?
It contained a list of instructions that seemed to plan a burglary and harm to family members, with handwriting matching Matthew's.
How did Matthew DeGrucci's behavior during interviews with detectives contribute to suspicion?
He gave inconsistent accounts of his movements and interactions with the crime scene, and his demeanor was evasive.
What was the final piece of evidence that led to Matthew DeGrucci's arrest?
The discovery of a bag containing stolen items and a note with his handwriting in a dam near his girlfriend's house.
Why was Matthew DeGrucci denied bail despite his father's support?
The magistrate deemed him a danger to the community and likely to commit further offenses.
What was the defense's argument during Matthew DeGrucci's trial?
They portrayed him as a gentle, loving boy with no anger issues, contradicting statements from his girlfriend and others.
Why did the forensic detective remain concerned about Matthew DeGrucci's release?
He believed Matthew's lack of admission and the trivial nature of the perceived offense indicated potential for future violence.
- Jennifer and Sarah De Gruchy were killed in their bedrooms.
- Adrian De Gruchy was found dead in the garage.
- The house showed signs of a staged burglary.
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