In "Chasing the Invisible," Dr. Grogan leads the reader on an engaging journey of inspiration, empathy, invention, and entrepreneurship. The story begins with his adventurous childhood and ends with an emphasis on the importance of personalized healthcare, with patient examples appropriately sprinkled throughout the text. Dr. Gorgan paints a vivid and easy to digest image of the intricacies of working with cancer diagnostics and why it is such a challenging field. If you are looking for a story of life lessons that educates on medical procedure and principle, reassures that there are good people working to improve the lives of patients, and demonstrates the strength hope and insurmountable will power, I highly recommend this memoir.