"In a city ruled by blood and betrayal, trust is the deadliest weapon." Min Ha-yoon is a fearless journalist who risks everything to uncover the Red Hand mafia's deadly crimes in Seoul's dark alleys, where death is around every corner and betrayal a daily occurrence. But when a threatening message puts her in the crosshairs, she is saved by a group of men not what they seem. BTS -seven men with secret identities-are undercover agents fighting a war against the destruction of Red Hand from within. As allegiances are stretched to the breaking point, and secrets are revealed, Ha-yoon is caught in a fatal game of survival, revenge, and betrayal. With the Red Hand closing in and their pasts on their heels, will Ha-yoon and BTS bring down the empire that has ruled the city, or become their next victims? Suspense. Secrets. Sacrifice. Will Ha-yoon trust the men who approach her as her rescuers, or will their pasts tear them all asunder?

"Some cases close. Some bury you alive." Two years ago, forensic analyst Kim Ji-hoon vanished. No trace. No body. No answers.The investigation was buried. The files sealed. The world moved on. Everyone except his sister. When Kim Ji-yoon receives a blood-stained case file with a chilling message "It's not over" she's dragged into a world of fabricated reports, buried crimes, and people who will kill to keep the truth hidden. Every step brings her closer to her brother. Every step brings her closer to being silenced.In a system where evidence lies and justice is sold, she's about to find out The only truth left is her. Files can be forged. Evidence can vanish. But blood always leaves a trail. Ji-yoon's search is about to unearth secrets no one is prepared for. What happens when you're the last proof standing?