The Dain Curse
The Dain Curse is a novel written by Dashiell Hammett
Dashiell Hammett
Samuel Dashiell Hammett was an American author of hard-boiled detective novels and short stories, and political activist. Among the enduring characters he created are Sam Spade , Nick and Nora Charles , and the Continental Op .In addition to the significant influence his novels and stories had on...

 and published in 1929
1929 in literature
The year 1929 in literature involved some significant events and new books.-Events:*Candide by Voltaire is declared obscene by the United States Customs and seized in 1930....

The detective known only as The Continental Op
The Continental Op
The Continental Op is a fictional character created by Dashiell Hammett. A private investigator employed as an operative of the Continental Detective Agency's San Francisco office, he never gives his name and so is known only by his job description....

 investigates a diamond heist that looks like an inside job. He is told of a supposed curse on the Dain family, said to inflict sudden and violent deaths upon those in their vicinity. Mr.Leggett has some skeletons in the closet, and nothing is what it seems in this strange, occultish family.

Various other things happen, among the family members.

From there the detective untangles a web of robberies, spells, and human sacrifices on his way to a solution to the puzzle.