Prisoner in the Tower of Cirith Ungol

The orcs had searched Frodo, when they found the shirt of mithril mail Frodo was wearing, a quarrel over the spoils erupted. A contingent of orcs from Minas Morgul led by Gorbag fought Shagrat and his company for possession of the mithril. The fighting spread throughout the tower and most of the orcs on both sides were killed, making it possible for Sam to proceed and rescue Frodo. Although Sam fought Shagrat, the Orc got away, bearing Frodo’s gear to Barad-dûr. Sam finally found Frodo in the topmost chamber after killing Snaga. Sam returned the One Ring to Frodo, dressed him and gathered food and gear, and they left the tower. On the way out their use of the Phial caused the gate to crumble behind them.

Again a bell clanged and the watchers issued a high and dreadful wail. This was answered far above in the darkness and out of the sky dropped the winged shape of a Nazgûl with a ghastly shriek.