Here is a description (blurb) of The Glass Dimension suitable for a back cover, Amazon listing, or quick summary:
In 1995 Texas, physicist Tony and his grieving wife Margaret hunt for proof of the supernatural in an abandoned farmhouse. What they find isn't ghosts—it's a "glass dimension," a thin barrier between parallel realities where the living family on the other side sees them as the intruders. As Tony's rift machine tears open portals, the terrified child on the other side pleads for them to stop. The hunters become haunted, and the line between monster and victim blurs. To heal the scar they've created, they must confront the painful truth: sometimes the proof you're chasing is someone else's nightmare. A quiet, empathetic horror of mutual fear, forgiveness, and the courage to finally let go.
(?120 words - short, atmospheric, spoiler-light, captures the core theme and twist.)