Alexander, Nina, 1942- The case of thorn mansion : a novelization / Nina Alexander. - New York, NY : Scholastic, c1997. - 76 p., [8] p. of col. plates : ill. ; 20 cm. - The adventures of Mary-Kate & Ashley . "Dualstar publications"--T.p. "Parachute press, inc."--T.p. Super-sleuths investigate a possible haunted house. Juv. ISBN: 0590880160 Subjects--Topical Terms: Twins--Fiction.Mystery and detective stories. Dewey Class. No.: [FIC]