Cass's husband, who initially appears to be loving and supportive but becomes central to Cass's unfolding events. His actions and motivations play a key role in the story's tension.

Cass's best friend who is perceived as loyal and sisterly. She has a history with Cass that influences the dynamics of their friendship.

A woman connected to Cass, whose tragic death becomes a catalyst for the unfolding events in the story. Little is known about her, but her fate has a significant impact on Cass.

Jane's grieving husband who is left to care for their young twin daughters while the story unfolds. He provides an important perspective and support for Cass.

A fellow teacher and friend of Cass, known as a "heartthrob" among colleagues. His relationship with Cass adds complexity to the narrative.