"..."

A soft murmur made Castiel stop in his tracks, frozen in place in one of the many hallways of Heaven. The voice was faint, a soft whisper that pierced through the other voices of angels and prayers on angel radio.

The voice was unfamiliar—not the Winchesters or any other human he had come to know during his time on Earth—but something pulled him to listen closer. It was the desperation of the voice, the undeniable energy—raw and urgent.

"Please... someone help me..."

The simple, despairing plea made all his angelic instincts take over. In a blink of an eye, he was there, a soft flutter of feathers making his presence known.