Tyson tends to cycle through the books that he keeps in his apartment. When he’s finished with a book, Tyson will either leave it at his pet shop or add it to the library at the Delaney family manor.
Amongst the books that are guaranteed to remain in his personal collection are the series of books that The Colonel published about his adventures under the false name Zachary M. Cohen, and the book on the beauty of everyday mathematics that his father published.
There is usually at least one Discworld book somewhere in Tyson’s apartment and a very dog-eared copy of The Brothers Karamazov. The latest Jack Reacher novel is usually on the coffee table and whichever book Jethro sent along with that month’s care package.
When he has a long journey ahead of him or a stakeout ahead that doesn’t depend on needing to listen out for anything, so much as watching a target, Tyson will listen to audiobooks.
Those audiobooks will usually be some type of novel from whatever video game series he’s been most interested in lately, or else tailored to whatever Tyson thinks will appease his stakeout partner the most.