Operating codes

Upon moving to Sentinel House, five-year-old Matty and fifteen-year-old Graham encounter ghosts from a nearby abandoned military compound, but real trouble begins when their father is arrested for posting information about a secret weapons system on the Internet.

Little, Brown
2001
9780316604659
book

Holdings

hidmidmiidnidwidlocation_codelocationbarcodecallnumdeweycreatedupdated
94866397356222682190842039LIVE285T 30809FIC MAN100015754856551709567815
611576436317822792190842039YORE517YORE032563FIC MAN100015774597521709567815
2022723560198722292190842039GROL244GROL016337FANTASY FIC MAN100015825759371709307855
2257272580671612762190842039LIS287T0025148FIC MAN100016159188961615918896
3019337647682824082190842039PCS303PCJ0060455FIC MAN100016377825731736800991
3467779684369515952190842039SOTA410T 57057FIC MAN100016407292551640729255
3752152707005823842190842039GMH292GMS0017931FIC MAN100016950443851736800991