Harry could feel Ron shaking.[…] ‘HERMIONE!’ Ron bellowed, and he started to writhe and struggle against the ropes tying them together, so that Harry staggered. ‘HERMIONE! HERMIONE! HERMIONE!’[…] Harry felt the ropes fall away and turned, rubbing his wrists, to see Ron running around the cellar, looking up at the low ceiling, searching for a trapdoor. […] Ron was now trying to Disapparate without a wand. […] Hermione’s screams echoed off the walls upstairs, Ron was half sobbing as he pounded the walls with his fists. (Harry Potter and The Deathly Hallows)