I Exposed My Sister's Murder Case for Seven Dead Souls

I work the night shift at a funeral home, and every morning at two o'clock, the deceased who died that day will send me WeChat messages. After a drowned female body was delivered, the recording on her mobile phone made me shiver all over - the perpetrator was my sister who raised me alone. The truth about old unsolved cases, the accidental death of my parents, and the corpses in the river must be torn apart by my own hands.