Originally from Sudbury, Massachusetts, Delaney now resides in New York City.

His debut novel Jinn won the International Horror Guild Award in 2004[1] and was well received by both critics and readers.

The film rights for his first book were sold to Touchstone Pictures, before Delaney even finished writing it.

The rights to his forthcoming second novel, Genome, Inc., was purchased in German by Bastei Lübbe in November 2009 and published as Golem in Germany in 2012.

Delaney is a decorated member of the NYPD, but continues to write in his spare time.