Deep Roots

Deep Roots is a 2018 alternate history, fantasy and horror novel by American science fiction and fantasy writer Ruthanna Emrys. It is the third book in Emrys' three book Innsmouth Legacy series, after The Litany of Earth (2014) and Winter Tide (2017). The series is set in the Cthulhu Mythos universe created by H. P. Lovecraft, and builds on Lovecraft's 1936 novella, "The Shadow over Innsmouth".