Chapter 10 - Hidden From The Start | Secrets & Collectibles Guide The Evil Within 2

There is only one hidden object in Chapter 10 - a Locker key.

Locker key #23

The only item in this chapter.

The only collectible item in this chapter is located in the very first building. Eliminate enemies assaulting the building, go to the main room and look at the ceiling - there you will notice a broken wooden floor, and a figure holding the Key.