Yes, you need to find them. Thats how you find Arthur Spiderwicks secret room.

First go to the kitchen and got to the cupboard next to the sove. You will notice there is
ALOT of honey. Remember this for later.

Then next to the stove on the other side, tap the wall. Jarad will say something about the
wall looking weak. Look around the room and grab the baseball bat. Then bash the wall
down.

Go into the Dumbwaiter.

You will find yourself in Arthur Spiderwicks secret room.The mice are on the floor. To get
out there is a gold cupboard. Open that and bash the wall down like before.

Thimble tack leaves you a note on the chest when you grab the key on the writing
desk."Jared Grace. Leave this Place" you will then open the chest and find the guide, then
exit out of the golden cupboard.

You will then get stuff thrown at you, don't let it hit you. When you get into the hallway
you will fight Thimbletack in hi boggart form, defeat him, then find the honey (remember)
grab some and find him again, give him some honey and he will calm down and apologizes.

Honey is useful because when you use it on yourself when fighting other creatures, you can
heal yourself a couple of hearts.

On last thing SPOILER!

Berrys can be thrown at goblins to paralyize for ONE TURN this dosn't always work but 98%
of the time it does.

I just posted that LOOOONNNGGGG post and my names Jax, if you wanna know more.

Yeah what he said

ummm yeah listen im out of the goblin camp and it takes soooooooooooo long to get back to
the estate i get killed a thpusand times over i can't seem to keep jared or simon alive
wheeew ummm k bi