Items not returned or renewed within 40 days of the due date will automatically be marked lost. Once an item is marked lost, you will be charged for total overdue fines accrued, plus a lost item fee of $80 (this includes a $55 replacement fee and a $25 processing fee).
Lost items that are found within six months of the due date can be returned to the library and the lost item fee will be credited to your library account. Items that have been lost for more than six months beyond their due date cannot be returned or refunded.
For complete information on lost books, visit here.