Summoned

Recently divorced artist Laura lives a quiet life in Marin County, spending time preparing for an upcoming show. One day, she sees a news story about a man named Nathan who's been found dead, suspected of having jumped off the roof of his San Francisco apartment building. Something about this bothers her, and we follow her to a local retirement home, where she tells her friend Frank what's happened. It turns out that Laura, Frank and Nathan all served on the jury for one of San Francisco's most high-profile cases - the trial of infamous serial killer Evan Barber, known as the Midnight Murderer. The jury ultimately found Evan guilty, and he was executed soon afterward. While the authorities are quick to dismiss Nathan's death as a suicide, Laura is suspicious. When Frank also turns up dead, the coincidence is too great to ignore. She starts looking into Nathan's last days, and learns that he'd been working on a book about his experiences, and re-examining some of the evidence from the case. Meanwhile, Laura starts to get the feeling that someone, or something, is following her. Could she be next? (official distributor synopsis)