Vengeance in the Dreary Night

A husband named Jefri who was previously just a lecturer was then appointed as a director in one of his wife's family's companies. Jefri had an affair with one of his students, Sarah. Blinded by their anger, Jefri and Sarah planned Sofia's murder. Sofia died, but Sofia's death was considered suspicious so her body was taken to the hospital for an autopsy. At the hospital, Sofia's body that was kept in the morgue disappeared. Police investigator, Arya Pradana began to suspect Jefri as Sofia's killer. On the other hand, the disappearance of Sofia's body made Sarah ask Jefri again about the murder they had planned. Sarah wanted to make sure whether Jefri had really killed Sofia or not because it was impossible for Sofia's body to disappear without a trace. Jefri began to feel depressed by the disappearance of Sofia's body. Did Sofia actually pretend to die because she found out about the murder plan for her? Or is Sofia really dead and someone else took Sofia's body? If so, where is Jefri's wife's body now?