Hermione paused as Sally Anne went into the alley. "Sally Anne, I really don't think--" Then suddenly ropes appeared and wrapped themselves around Sally Anne. Hermione watched in horror as a figure, cloaked and masked, grabbed Sally Anne.
"SALLY ANNE!" She yelled, but there weren't many people around, and Hermione frantically looked around. There was garbage, litter, boxes, papers, some scattered bricks-- Hermione's eyes widened and grabbed a few bricks. She knew she was being stupid, having no magic and all, but she refused to stand by, idle.
Hermione flung one of the bricks, and hoped it hit the mysterious figure.