Methods of Dyeing

In Ismyre, on the eve of his lecture, the renowned botanist and master dyer Professor Detlef is found dead in the university gardens. As the local constabulary begin their search for the culprit, a strange detective arrives from outside the city to help solve the crime. In a place where things are never as they seem, will Mary the university custodian be able to help the mysterious investigator uncover the truth?