Addie’s memorial has made her a local hero, but the attention of a mean-spirited troll signals the start of a new mystery. Who is LostGirl22? And what is her problem with Juniper?

Audrey organises a Shark Day for Addie as a way to break her big news. However, Jenna’s crush, Emily’s guilt and a break-in at the shop threaten to derail Audrey’s plans.

Bonnie causes chaos in the Darrow house by turning a sleepover into a party. Meanwhile, a clue brings Addie closer to solving the bookshop mystery.