Background. Garlic mustard (Alliaria petiolata) is an invasive herb that has spread throughout much of the United States over the past 150 years, becoming one of the worst invaders of forests in the American Northeast and Midwest.ackground. Garlic mustard (Alliaria petiolata) is an invasive herb that has spread throughout much of the United States over the past 150 years, becoming one of the worst invaders of forests in the American Northeast and Midwest.
Mystery fiction. Mystery, 1934 mystery fiction magazine cover. Mystery fiction is a genre of fiction usually involving a mysterious death or a crime to be solved. In a closed circle of suspects, each suspect must have a credible motive and a reasonable opportunity for committing the crime.
How to write a mystery that will knock them dead. 1  The plot is centered around a crime, normally murder. 2  The main character is normally the person trying to solve the crime. 3  The authors use descriptive writing to create suspense and, often, an atmosphere of danger. At the same time, a mystery is often set up as a kind of puzzle or game for readers, who analyze clues and try to solve the mystery themselves. 2  The main character is normally the person trying to solve the crime. 3  This may be an actual detective, or private citizen who gets involved for personal reasons.