Sarah, also 15, creates video diaries that complement Ryan's written account, leading their exploration into the town's secrets. Her fearless and determined character contrasts with Ryan's caution and introspection.

Ryan’s father serves as a representation of parental authority and caution, often attempting to separate Ryan from Sarah. His emotionally distant relationship with Ryan and mysterious activities hint at deeper connections to the town's secrets.

Gladys, the local librarian, embodies the trope of the uncooperative keeper of information. Her distrust of new media and stern demeanor make her a potential obstacle in Ryan and Sarah’s investigation.

The ghost of Joe Bush is central to the unfolding mystery and rumored crimes at the Dredge. His spectral presence and the history surrounding his death cast a shadow over Ryan and Sarah's investigation.

Henry is Paul McCray’s jovial friend and former company employee, trusted by Ryan for his friendly demeanor. He becomes an important figure in the unraveling mystery of Skeleton Creek, with ties to Ryan and Sarah’s quest.