Following the success of his bestseller, , Iraq War veteran Luis Carlos Montalvan advocated for America’s wounded warriors and the healing powers of service dogs. In this spectacular memoir, Luis and Tuesday brought their healing mission to the next level, showing how these beautifully trained animals could assist soldiers, veterans, and many others with mental and physical disabilities. They rescued a forgotten Tuskegee airman, battled obstinate VA bureaucrats, and provided solace to war heroes coast-to-coast. As Luis and Tuesday celebrated exhilarating victories, a grave obstacle threatened their work. Luis made great progress battling his own PTSD, but his physical wounds got so bad that he began using a wheelchair. He needed to decide whether to amputate his leg and carry on with a bionic prosthesis. Even as he struggled with dramatic emotional and physical changes, ten-year-old Tuesday was lovingly by his side through it all. Luis’ death in December 2016 was another terrible tragedy of the invisible wounds of war. This book was his last letter of love to his best friend, Tuesday, and to veterans, readers, friends, and fellow dog lovers everywhere.