Investigators also found that a private vehicle associated with the medical-supply network had visited the mortuary before the funeral.

Whether those facts pointed to negligence, deliberate interference, or both remained under investigation.

Meanwhile, Rachel’s memory card had yielded invoices and photographs of device service labels.

Some serial numbers belonged to equipment that had never been delivered to the clinics named on the forms.

Others showed inspections marked “passed” on dates when the technicians listed were out of state.

The records were not glamorous or dramatic.

They were columns of numbers and signatures.