Need Helping in Finding a Sci-Fi Novel

[Hellstrom]

I believe it was written in the 60s or 70s. It involves a kid who finds a portal to another dimension in the wall beside his bed. I know that's not a lot to go on, but it's pretty much all I have. IIRC, the first part of the book is about this kid on this side of the portal, the second part is about the other side.

Any ideas? Thanks.

[LDWriter2]

Since no one else has responded I thought I would

Sorry that novel does not sound familiar.

But I recall an ep from "Twilight Zone" that sounds very close yet with changes.


And it sounds YA if that helps at all.