This book generally considered the first detective novel in the English language. The Moonstone is a 19th-century British epistolary novel. The Moonstone of the title is a diamond. It gained its name from its association with the Hindu god of the moon.
This book considered to be among the first mystery novels. The various strands of the plot combine to produce a thrilling story, leading this particular type of fiction to be described as 'sensation'. A strong theme in the novel is that of marriage and its impact on women (in particular on Laura Fairlie). The plot revolves around men stealing women's identities.