I screamed, clutching for the safety cable, swinging out over the platform by one hand. I grasped for anything to hold onto with the other, finding and catching a narrow branch while the air left my lungs in a long shriek of terror, the toes of my sneakers scrabbling against the bark and barely catching a hold.

I looked up, doing my best not to swing, fingers already on fire from the pressure of holding most of my body weight, to find Grace standing on the platform, a ...