Twist Phelan is an American writer of crime fiction.

[1] She is known for her Finn Teller Corporate Spy mystery series, Pinnacle Peak mystery series, and her short stories, which have won numerous awards (including two International Thriller Writers Awards and the Arthur Ellis Award for Best Crime Short Story of the Year).

Phelan attended Stanford University for both undergraduate and law school.

She was a trial lawyer before becoming a writer.

In March 2013, Phelan married Jack Chapple in Denver.