The clock struck midnight as Detective Morris arrived at the abandoned factory, rain pouring down from the night sky. A lone body lay sprawled across the concrete floor, blood pooling around the victim's head like a crimson halo. The detective knelt beside the corpse, noting the peculiar arrangement of objects surrounding the dead man's outstretched hands. Seven playing cards had been meticulously placed in a perfect circle, each one representing a different deadly sin. Officer Jenkins approached cautiously, his flashlight beam cutting through the darkness to illuminate the victim's horrified frozen expression. "Third one this month with the same signature," Detective Morris muttered, examining the small origami swan left inside. The killer was sending another message, another piece to a puzzle that had baffled the department for precisely.