00981cam a2200289 4500 606427564 TxAuBib 20151006120000.0 850101s1969||||||||||||||||||||||||eng|u 69012166 /AC 9780448195469 0448195461 9780448095462 0448095467 (OCoLC)4366 DLCDLCTXG TxAuBib Keene, Carolyn. The invisible intruder / by Carolyn Keene. New York : Grosset & Dunlap, 1969. 175 p. : ill. ; 20 cm. Nancy Drew mystery stories Nancy Drew and her friends go on a ghost hunting expedition and become involved with a gang of thieves who concentrate their activities on collectors of valuable shells. 20110915. Detective and mystery stories. Nancy Drew mystery stories. TXNAV