An author, professor, and financial executive, Keith Goad lives in Fort Wayne with his wife. The Relentless Enemy series currently consists of Relentless Enemy (Volume 1- 2020) and The Invictus (Volume 2- 2023). In Volume 1, Relentless Enemy follows Craig Henriksen who helps decipher crime scenes, alongside Chicago police, in their search for a serial killer. Craig uses strange abilities whose origin remains a mystery, even to him. Craig is forced to face the monsters of his present- as well as his past. In Volume 2, The Invictus watches Craig and his cousin Danny as they become contemporary warriors in the longest war of earth and heaven. Will they understand the war in which they fight - in time to survive it?