Alma Katsu is a graduate of the Master's writing program at John Hopkins University in Baltimore. She worked briefly in advertising and PR before moving into the intelligence world, working as a senior analyst for several US agencies, including the American equivalent of GCHQ and the CIA, and a think-tank.

Her first novel was The Taker, the first book in the Immortals Trilogy, which was an American Library Association top debut novel of 2011. A contributor to The Huffington Post, Alma Katsu lives in Columbia, Maryland.