What is the point to the items that pop up on certain levels?

can someone tell me if there is any reason to click the items found in this game? is there anyone who knows how many items there are and if you gain anything from finding all of them? i have searched all the forums i could find and no one talks about them.

You don't really gain anything from finding them, it's more or less just to go with the plot lines and get to see the personalities of the characters, and which supernatural character they are. Nothing really to gain, just fun little tidbits added to game play.