Psychological fiction (Wikipedia)
In literature, psychological fiction (also psychological realism) is a narrative genre that emphasizes interior characterization and motivation to explore the spiritual, emotional, and mental lives of its characters. The mode of narration examines the reasons for the behaviours of the character, which propel the plot and explain the story. Psychological realism is achieved with deep explorations and explanations of the mental states of the character’s inner person, usually through narrative modes such as stream of consciousness and flashbacks.- Arsenic (Wikipedia)
Arsenic is a chemical element with the symbol As and atomic number 33. Arsenic occurs in many minerals, usually in combination with sulfur and metals, but also as a pure elemental crystal. Arsenic is a metalloid. It has various allotropes, but only the grey form, which has a metallic appearance, is important to industry.