Van Patten tells PEOPLE she remembers worrying, "What would [Knox] think of me, this random actress portraying her in a very traumatic time of her life?"

It’s been nearly two decades since the murder of 21-year-old British student Meredith Kercher in Perugia, Italy first became international news.

Grace Van Patten (“Tell Me Lies”) stars as Amanda Knox, who was accused and prosecuted for the murder of her roommate, Meredith Kercher, in Italy.