MARTIN ALDRIDGE, 67, director of the Harwick Conservatory of Music for twenty-two years, was found dead in his private office on a Thursday afternoon in March. His assistant discovered him at 4:15 PM, slumped at his desk. Cause of death was recorded as acute cardiac event — Aldridge had a documented arrhythmia and had been under his cardiologist's care for three years. The case was closed as natural causes within forty-eight hours.
Six weeks later, an anonymous call to the county medical examiner's office requested that the toxicology workup be expanded to screen for cardiac glycosides. The caller did not identify herself. The expanded screen found digoxin at 2.4 times therapeutic levels — consistent with chronic low-dose administration over a period of weeks, not a single acute ingestion. Digoxin at those levels in a patient with pre-existing arrhythmia is fatal, predictably and quietly.
The investigation reopened. Office access logs show SONJA KELL, 44, the conservatory's head archivist, visited Aldridge's private office twenty-three times in the six weeks prior to his death. Her baseline rate: three to four visits per month. A digoxin prescription in her name was filled eight weeks before Aldridge's death — documented as treatment for her cat's cardiac condition. Trace amounts of digoxin were found in the dried tea leaves remaining in Aldridge's office tea caddy, a custom herbal blend he kept exclusively for personal use.
Sonja Kell is in interview. She has not asked for a lawyer.
Evidence
Expanded Toxicology Report
Martin Aldridge, M, 67. Original COD: acute cardiac event, arrhythmia-related. Expanded screen (requested anonymously, week 7 post-mortem): digoxin present at 2.4x therapeutic threshold. Pattern consistent with chronic low-dose accumulation over 4-6 weeks rather than single acute ingestion. At this concentration in a patient with documented AV node dysfunction, fatal arrhythmia is a predictable outcome, not a coincidence. The original attending physician was not aware digoxin was a factor — it was not in Aldridge's prescription record.
Office Access Log — Aldridge Private Office
Electronic key-card log for Aldridge's private office, prior 10 weeks. Sonja Kell's card: 23 accesses in the 6 weeks before death, compared to a baseline of 3-4 visits per month in the preceding 14 months. Visits concentrated in afternoon hours, 2:30-4:00 PM window. Aldridge's tea service was typically prepared and left on his desk by 2 PM. No other staff member shows anomalous access patterns during this period.
Pharmacy Record — Sonja Kell
Digoxin prescription filled 8 weeks prior to Aldridge's death. Prescribing veterinarian: Dr. R. Cavanaugh, licensed small animal practice. Documented indication: feline hypertrophic cardiomyopathy, patient 'Pasha,' domestic shorthair, 4.1 kg. Prescribed dose: 0.031mg per administration, twice weekly. Quantity dispensed: 60 tablets at 0.125mg each. A cat of Pasha's documented weight would require approximately 8-10 tablets over a standard 12-week course. 60 tablets represents a significant overage relative to documented need.
Tea Caddy Trace Analysis
Custom herbal blend (chamomile, lemon verbena, dried elderflower) recovered from Aldridge's desk caddy. Trace digoxin detected — concentration consistent with repeated introduction of small quantities into the dry blend over a period of weeks. The blend was a personal item, not part of any shared kitchen supply. Aldridge's assistant confirms she never handled the caddy. The caddy was a gift; its provenance is not yet established.
The Buried Files — Conservatory Archive
Discovery during investigation: a sealed archive box in the conservatory's records storage, catalogued under an administrative reference that does not appear in the official finding system. Contents: 14 internal complaint documents spanning 1999-2021, 9 signed non-disclosure agreements with former students (payments ranging from $8,000-$45,000, authorized under Aldridge's discretionary fund signature), and 6 inter-departmental transfer authorizations for students whose complaints had been filed. All documents bear the organizational system and cross-referencing notation consistent with Sonja Kell's archival practice. Her fingerprints appear on 11 of 14 complaint documents.
Anonymous Tip — Medical Examiner
Call received week 6 post-mortem. Female voice, precise register, no distress markers. Caller stated: 'The Aldridge autopsy should be screened for cardiac glycosides. The original toxicology was insufficient given his cardiac history.' Call duration: 31 seconds. Caller did not identify herself and did not stay on the line. The call was made from a mobile number registered to a prepaid carrier. The information provided was technically accurate and specific in a way that suggests direct knowledge of both Aldridge's cardiac history and of digoxin's properties.