Ruby Jean Jensen (March 1, 1927 – November 16, 2010) was an American author of pulp horror fiction.
[2] Jensen was born Ruby Jean Hendrickson in McDonald County, Missouri, where she spent her early years before moving with her family to Northern California.
Her first book sale was to Warner Paperback Library in 1974—The House That Samael Built, a Gothic romance.
She would switch to unmitigated horror for the rest of her career, which included short stints with Leisure Books and Tor before finally settling with Zebra, starting with MaMa (1983).
Many of her horror books dealt with the "creepy children" trope[1][2] (in the lines of Henry James' The Turn of the Screw or Stephen King's "Children of the Corn") or that of the "evil doll"[4][2] (as in the Child's Play film series or in Annabelle—which coincidentally is the title of a novel by Jensen, though unrelated to the film).