All of Dorothy Sayers' mysteries are worth reading. She has a command of English and a story-telling ability that makes her, in my opinion, one of the two greatest mystery writers of the twentieth century. Most of Ms. Sayers' mysteries feature Lord Peter, second son of the Duke of Denver. He is one of the most delightful characters in English literature and well worth meeting in any of Ms. Sayers books. Most of the Lord Peter mysteries stand alone and can be read without worrying about sequence. However four of the mysteries involve Harriet Vane, and for maximum enjoyment, those four mysteries should be read in order. Strong Poison describes the first meeting between Harriet and Lord Peter. Have His Carcase explores the relationship between the two of them as they investigate the death of a man whose body Harriet discovers while hiking along a deserted beach. The interaction between the two of them can best be understood and appreciated if Strong Poison is read first. Have His Carcase may be the least enjoyable of the four romance-mysteries involving Harriet, but this book leads to the final two books in the series, and those two books are the finest romance-mysteries ever written.