Black Sand Beach

"Dash and his crew might have found the source of the evil at Black Sand Beach in a haunted lighthouse. But when Lily reveals that she found Dash's journal there, Dash doesn't know what she's talking about. He's never seen this journal, and it's from last summer. Dash wasn't at Black Sand Beach the summer before. As Dash, Lily, Eleanor, and Andy read the journal together, it reveals Dash's encounters with two ghost girls. Another truly horrible monster. And a life changing event makes things startling clear: Black Sand Beach isn't done with them yet"--Provided by publisher.

Told in alternating timelines, Dash and his friends try to use the Darkness to capture the monster they accidentally freed, while in 1994 sisters Mabel and Kasey come face-to-face with the shapeshifting creature their father is hunting.