00923cam a2200253 4500 349234398 TxAuBib 20180619120000.0 880112s1987||||||||||||||||||||||||eng|u 9780448095028 0448095025 (OCoLC)17335741 TxAuBib Keene, Carolyn. The hidden staircase / by Carolyn Keene. New York : Grosset & Dunlop, 1987. New York : Grossett and Dunlap, 1987. 182 p. : ill. ; 20 cm. Nancy pays a visit to Twin Elms, a gracious old country estate, only to find that her hosts complain they are being haunted by ghosts. 20180619. Drew, Nancy (Fictitious character) Fiction. Women detectives Fiction. Mystery and detective stories.