"Probably the same tool as was used on the door."

Because he was worried about running out of ammunition, he used only one shot on the door.

Gabriel used the cane to rap on the door.

With the crowbar he had used on the door.

Hattie used her key on the inner door and we entered.

That's the gun I used on the door.

He closed the door and used a key in one of the two locks on the door.

She finds a screwdriver and uses it on the door to escape.

"We might have to use it on the door."

Then we use the same key on the other door at the end of the passageway.