Sinful maidens, dead suitors and an astute pharmacist 1396: Cologne is upside down - one honourable Cologne citizen after another is found dead in the Dirnenhaus. The councillor entrusted with the case remembers that Adelina has solved a murder case before and asks her for help. The young woman has just taken over her father's pharmacy and actually has other things to do than hunt for murderers. However, she lets herself be softened up - and suddenly becomes the prime suspect herself ...