The Puppeteer (2018)

A young woman's interest in a murder case evolves into a series of twists and turns of who-done-it. Grace, a woman with a fascination for crime and criminology, finds herself sucked in by her boyfriend's current homicide case involving Ethan, an emotionally fragile man and the murder of his therapist, Hannah's husband. On the outside, it looks like an open and shut case, but as Grace works to unravel all of the intricate details herself, she narrows in on another suspect. Although it seems like Hannah is might have found the real killer, everything is turned upside down and who is telling the truth and who is lying seems harder than ever to discern.