01192cam a2200325 4500 339243956 TxAuBib 20110505120000.0 961107s1969||||||||||||||||||||||||eng|u 69012166 /AC 9780448195469 0448195461 (OCoLC)4366 TxAuBib Keene, Carolyn. The Invisible Intruder / by Carolyn Keene. New York : Grosset, 1969. 175 p. : ill. ; 20 cm. Nancy Drew Mystery Stories ; ; 46 Accelerated Reader Word Count - 33651. 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. Middle grades (4-8.) Accelerated Reader AR 5.1 5.0 5622. 20010420. Drew, Nancy (Fictitious character) Fiction. Girl detectives Fiction. Mystery fiction. Nancy Drew Mystery Stories ; ; 46. ALEML