4 Mantan (2020)

Sara (Ranty Maria), Airin (Melanie Berentz), Rachel (Malay Nicole), and Amara (Denira Wiraguna) are accidentally brought together by one incident: the death of their ex-boyfriend Alex (Jeff Smith). What is surprising: before he died, Alex left a letter for each of them and said that if they receive the letter after Alex died, one of the killers is among them.