― A Red Herring Without Mustard is the 3rd book in the Flavia de Luce series by Alan Bradley. I have enjoyed all of the Flavia mysteries that I've read so far - they're exciting, fun and educational. ∙ Flavia is an 11 year old girl living in an old stately ancestral home in Bishop's Lacy, a small British village during the 1950's. There's something very special about Flavia though - she loves chemistry! Having no mother and a bit of an absent minded father, Flavia amuses herself in the [...].