Emmy-nominated Meghann Fahy, rising star of “White Lotus” and “The Perfect Couple,” plays Violet, a widowed mother on her first date in years. She arrives at an upscale restaurant and is relieved to find her date, Henry (Brandon Sklenar of “It Ends with Us”), is more charming and attractive than she expected. But their chemistry falters when Violet is irritated and then terrorized by a series of anonymous calls to her cell phone. She is instructed not to tell anyone and to follow instructions or the hooded figure she sees on her home’s security cameras will kill Violet’s young son and her sister, who is babysitting her. Violet must do exactly as she is told or everyone she loves will die. Her unseen tormentor’s final instruction? Kill Henry.