Sarah Andrews (died 24 July 2019) was an American geologist and author of twelve science-based mystery novels and several short stories. Many of the novels feature "clear-thinking, straight-talking" forensic geologist Em Hansen and take place in the Rocky Mountains region of the United States. Her novels have been praised for their combination of science and detective work within the mystery genre. Andrews, her husband Damon, and son Duncan died in a plane crash in Nebraska on the 24th of July, 2019.