He got ready to do it again.
"Wait!" said Janet. In a quivering voice she called Sally's name again.
There was no reply.
"Do it now!" she said, almost incoherently. "Do it now! I believe one of the panels is giving."
He charged it once more, and then again.
"The panel's giving," said Janet.
He flung down the chair from his shoulders. The panel had splintered from its joining at the bottom. He could just push it forward a little, making a slight aperture.
"Get the poker!" he said firmly.
She ran obediently and brought it to him. He prized it into the gap, levered it forward until there was room for his fingers to squeeze through; then he thrust them in and used the strength of his arm, an additional lever, to push an opening down towards the key inside.
"Mind your arm," said Janet; "you're tearing the skin."