Walking at the Speed of Light is a perceptive offering of memoir and reflections that can be taken one at a time and provide insight and healing for all kinds of darkness. Although many books have addressed grief and depression related to Christian faith, a book that gives readers a Christian perspective on these subjects through forward thinking including organ donation and positive life building offers a unique opportunity. Walking at the Speed of Light begins with the death of Cheryl J. Heser's thirty-three-year-old son, Joshua, the grief experiences that followed, and the organ donation that affected the lives of over 100 people. Cheryl then provides chapters related to the Light of the World, sharing insight and nurturing for grief and depression as well as an enthusiastic embracing of all aspects of the enlightened Christian faith journey.