Günter's family demands he and Edwin informally investigate a rest home, where three seniors die of officially natural cardiac arrest almost in a row, two without heirs. None had a risk condition, and equally informal autopsy shows a poison, so it becomes an official case. While they remain formally assigned to seemingly unrelated animal cadavers presumably dumped in the river after lab experiments, the home's intake algorithm and business model, based on hefty entrance fees and short stays, may still link to it, but the poisoned high tea treats prove key.
—KGF Vissers