Those who knew (2018)

"On an unnamed island country ten years after the collapse of a brutal regime, Lena suspects the powerful senator she was involved with back in her student activist days may be guilty of murder. She says nothing, assuming no one will believe her, given her family's shameful support of the former regime and her lack of evidence. They are the same reasons she told no one, a decade earlier, what happened with the senator while they were dating"--