***Spoiler Alert*** Suggest to read after the book; for future reference.
The Doctor who could have been a young Pendergast before he overloaded in the world of the weird:
“ ... He is perhaps the only, and certainly the preeminent, enigmalogist operating in the world today. His job is to investigate, interpret, and explain the— for lack of a better word— unexplainable. He throws light upon riddles of history; he separates myth from truth and the natural from the supernatural.”
... he was an empath— someone with a unique, almost preternatural ability to sense the feelings and emotions of others.
... the gray eyes of a tall man with light brown hair, who, judging by his face, was perhaps forty years old. It was a nice face, she thought: reflective, with sculpted cheekbones and the faintest hint of a cleft in the chin, the skin smooth ...
In times of great agitation or emotional unrest, Logan relied on Zen meditation, along with his skill as an empath, to calm his mind.