Carol Cassella is a practicing anesthesiologist and novelist. She was a closet writer for years before blending medicine and fiction in her first novel, OXYGEN, the story of an anesthesiologist tangled in the aftermath of an operating room catastrophe. Prior to writing fiction, Carol wrote about global public health issues in the developing world.

Carol is also the mother of two sets of twins. Her other favorite activities are reading and hiking or cross country skiing in the North Cascades. She lives near Seattle on Bainbridge Island with her family and is currently working on her next novel.