Her photographic work deals with themes that reclaim what has been discarded and make visible that which is hidden. Landfill Dogs has been featured in national and international exhibitions and magazines, most notably on ABC World News with Diane Sawyer (December 2013) and CNN.com (November 2014). Landfill Dogs book was released in November 2015. Johnstone lives in Cary, NC with her husband, four dogs, and two cats.