By the Time You Read This (Raisa Susanto Book 3)

FBI forensic linguist Raisa Susanto believed she had moved past her traumatic history after her psychopathic serial killer sister, Isabel, was imprisoned. That changes when Raisa receives a letter from Isabel containing a single message: By the time you read this, I'll be dead. Isabel is soon found dead in her cell, drawing Raisa back into her sister's dark legacy—including a group of true-crime enthusiasts fixated on Isabel's crimes and those who survived them. When a new murder occurs using the same methods that made Isabel infamous, Raisa and FBI forensic psychologist Callum Kilkenny face a dual investigation: determining who killed Isabel and why, while also searching for someone mimicking Isabel's killings. Raisa must uncover the truth before another victim dies, regardless of whether she is prepared for what she discovers.