The yellow folder that Jack’s mother pulls out of the bookshelf has Arabic writing on it. The writing seems to be “ÙŠØ¹Ù‚ÙˆØ¨ Ù¦Ù§Ù¢”. The word part reads as Ya’qub which is the Arabic version of the name Jacob and the number part either reads 672 which adds up to 15 (Sawyers number). This could further a few theories I have read that suggest that Jack and Jacob are family.
The last will and testament was mailed to Christian Shepherd at 233 Bastian Drive. 233 was the house number for David’s mother’s house (23).