Calling Leah by Shaley Dehner

Leah Abernathy lives a normal life every seventeen-year-old dreams about. She has two loving parents who support her every move, she's on track to be one of the next bestselling authors, she has a close-knit group of friends, and she has an amazing boyfriend. But on a hot summer day at the lake, her life changes forever.

An innocent selfie turns into a nightmare as a video pops up on her phone screen. A video that shows her being killed. At first, she thinks it's a sick prank one of the other Briarwood High School seniors is playing on her. But when her friends start receiving their own cryptic video premonitions and creepy messages start to surface related to a terrible event that happened at last year's Harvest Festival, she knows someone is out for blood.

As this year's Harvest Festival looms closer, Leah and her friends must race against the clock to figure out who is sending the videos before each of them meets a tragic end.