Can someone explain house on cold hill ending?

In the ending of "House on Cold Hill," the main character, Ollie, confronts the haunting presence of the house, uncovering dark secrets tied to its history. The climax reveals the connection between the past and the present, leading to a confrontation with the supernatural forces at play. Ultimately, the story suggests that the house's malevolent energy is linked to unresolved trauma, leaving the characters to grApple with the consequences of their choices and the lingering impact of the past. The resolution is both unsettling and thought-provoking, emphasizing themes of memory and the haunting nature of history.