Thanks to his new friends Apollo had found out ghosts could be reborn but, unfortunately, they were all too comfortable with their current situation to even bother to learn more about that option.
Apollo: aren't you even curious?
Jeanne-Marie: why? Here there is no pain, no needs to take care of; just a peaceful existence with no worries...
Esther: and you can possess objects! That's super cool!
Apollo didn't agree with them, but he kept quiet to avoid offending his new friends. He had managed to get some information and now he only needed to follow the leads and investigate a little further.
After all, if there was a chance to go back to life, he had many reasons to take it.