Lullaby of the Stars

After her divorce from her husband, Jillian Parrish left the metropolis for a small town on the Atlantic coast. However, the place she considered a refuge from misfortunes delivered strange surprises. It all began when her longtime acquaintance Link unexpectedly returned to town, a person of interest in the case of the disappearance of Jillian's best friend, who has never been found.
At the same time, Jillian's seven-year-old daughter is making an imaginary friend. And that would be fine; such things happen with children, but her imaginary friend is named Lauren, just like the missing girl.
Lauren persistently delivers messages to Link. But how is that possible?