For the people who haven't picked up on it, Terry tends to dream about the ghosts he's exposed to and relives their memories as them when he's asleep. That said, if your character has a dead person chillin' out around them, if you'd like, Terry could definitely know something about them via dream-memories. The more traumatic, the more likely Terry will be able to 'see' it. His entries will start reflecting what he sees when he's asleep, and the ghosts in the school tend to gravitate toward him because he's the only person who can see/hear them. Like some kind of dead people beacon.
This is just a general thing, so if you want to comment here now for instant gratification (relatively instant :D Terry might very well do edits, and his first dead person entry is coming up soon), or email me sometime later with something you'd like him to see to provide plot for him and your character, feel free. :D My email is spidersensed@gmail.com if you'd like to use it.