Caragh M. O'Brien

Caragh M. O'Brien is an American novelist, best known as the author of the Birthmarked trilogy, a series of young adult, dystopian novels. Her books take place in a world destroyed by climate change. She also wrote an adult novel, Annie Bot, about a malfunctioning gynoid companion, under the pen name Sierra Greer.

Early life
O'Brien was born in Saint Paul, Minnesota. She graduated from Williams College with a Bachelor of Science in physics, and earned her MA in the Writing Seminars at Johns Hopkins University.

Career
Before becoming a full-time writer, O'Brien was a high school teacher. She also published romance novels.

Personal life
O'Brien is married with three children; two sons and one daughter. She is one of seven children in her family and she has sixteen nieces and six nephews.

Birthmarked Trilogy

 * Birthmarked, Roaring Brook Press, 2010
 * Prized, Roaring Brook Press, 2011
 * Promised, Roaring Brook Press, 2012

Short stories in the Birthmarked universe:
 * "Tortured", set between Birthmarked and Prized; published online at Tor.com, and in
 * "Ruled", set between Prized and Promised; published online at Tor.com
 * Additional tie-in stories are available from Caragh O'Brien's personal web site

Vault of Dreamers Trilogy

 * The Vault of Dreamers, Roaring Brook Press, 2016
 * The Rule of Mirrors, Roaring Brook Press, 2016
 * The Keep of Ages, Roaring Brook Press, 2017

As Sierra Greer

 * Annie Bot, HarperCollins Mariner, 2024.