A collection of realistic suspense stories focused on the hidden pain of city dwellers. During his night shifts in a Grade-A office tower, security guard Zhang happens to overhear the callers' private confessions: the despair of being pressured to marry and then divorced in a flash, the fury of having someone else take over one's life, betrayal by a best friend and a lover, and breakdowns amid cutthroat office politics. Nine stories, nine souls crushed by life and struggling to be reborn. Using the techniques of suspense, the book reveals the undercurrents beneath the glossy world of work. Each story is like a prism, refracting the anxieties, desires, and hopes of modern people seeking redemption. When the late-night calls end, buried truths, unspoken regrets, and desperate struggles for survival will finally come to light before dawn.