Most bookstores are filled with volume benign leather bounded parchment. It is possible to unknowingly select an anomalous mnemonic entity. Reading the entity is dangerous as hallucinations will occur along side an intense urge to continue reading for hours or even days at a time. Eventually, the reader will become unresponsive to external stimuli leave the book and wander off, never to be see again. Even when lock in a contained asylum cell.
As a courtesy to our readers on mobile devices, please collapse long posts. ~Zyn
I'm thinking of adding a bit where there is a #book selfie campaign started on twitter by SCP to locate other books. Though the initiative three more books are confirmed to exist. Two are contained easily while the third eludes SCP. I'm thinking they find the scene of a break in/homicide at the third owner's residence and postulate another organization obtained the book.