Cancer Mercury's Arc

Chapter 3 of 3

By the next tidal shift, the false trails had done their work. The looping paths curved into dead ends across the seafloor, and Cancer Mercury sat at the mouth of the wreck watching them dim. She thought the crystal turtle would keep glowing steady, marking her from above like a lantern she couldn't put out. Instead, a hairline crack had opened along its shell. She heard it before she saw it—a small, dry tick, wrong for the water. She swam closer. The gold filigree along the turtle's back was splitting. Light bled from inside in thin ribbons, brighter than the memory light around it. Something was pressing outward against the shell. She could see the shape of it moving under the crystal, slow and deliberate, the way a hand tests a door. Cancer Mercury had built two armor plates from her own crystallized tears. She wore one on her chest, the other on her forearm. Neither was finished. She pressed her palm to the fracture and tried to hold the shell closed. The crystal was warm. That was the first wrong thing. Memory crystal ran cold. Whatever was inside was running its own heat. The shell broke under her hand. A cloud rose from the split—a metallic mist, threaded with flickering images she couldn't hold in focus. A face. A rope. A room she'd never seen. The mist gathered itself into a shape with two large, wet eyes and a trailing body, and it looked at her. Behind it, the crystal shell hollowed out and reformed into a ring, its rim carved with symbols, its center dark and shifting like a cut of open sky. A gate. Small, low to the seabed, but a gate. She understood then what her leaking cargo had been building toward. The memories weren't just marking her. They were assembling something. A door, and a courier to hold it open. The mist-thing drifted toward her forearm plate and touched it. The plate rang once, soft, and cracked straight down the middle. Cancer Mercury pulled her arm back. She had come here to become impenetrable. Instead her own armor had split at the first real test, and a piece of somebody else's grief was studying her like it knew her name. She reached into the wreck and dragged out the heaviest thing she had left—a blackened iron star, salvaged months ago, a dead courier's guild mark. She wedged the star into the mouth of the new gate. The symbols along the rim dimmed. The mist recoiled, thinned, and slid back through the ring before the light went out. The gate held shut. The turtle was gone. In its place sat a plain stone ring, quiet, closed, and hers to guard. Cancer Mercury sat down in front of it with her cracked plate in her lap. The shell she wanted would have to be built from something harder than tears. She had learned that much, and it had cost her half her armor to learn it.