What else did he remember? Vampires, angels, witches, werewolves, making friends and losing them, people dying, zombies... But he couldn't know how knowledgable Sam actually was about all of that, so how could he come right out and say it? To anyone who didn't live a life full of insane (and Connor's life certainly was insane, whether it included vampires in hot leather or not), it would sound completely mental.
Biting his lower lip, he considered how to answer. "I remember quite a bit, considering some of you are here without a bit of knowledge. New people arrived almost every day. People were...different. Almost everyone had something sort of...special about them. Do you have any idea what I mean? It's just...it sounds bad, I guess, but no one was normal. Anyway, and the people running this place, they have powers like I've never seen. Bringing the dead back to life?" No need to scare Sam outright and tell him that some of those dead had been caused by said management themselves. The memory of Luna, scorched and glassy-eyed coming after them still burned.