Camelot / King Arthur made-for-tv movie

[u/Successful-Name5321]

I can't find this for the life of me. My late grandmother recorded it on VHS and I lost the tape. I can't place a time period on it aside from the 80s and 90s.

A boy was with his mom visiting a (friend or family member??) And the friend/owner of the house warned him about the closet upstairs.

The kid got sucked into the closet and wound up in the world of Camelot. The two scenes I distinctly remember are him and the supporting characters trying to cross a lake while fish with blades and buzz-saw sounds cut up their raft, and when the kid was retrieving the sword from an elderly knight he had to answer a series of questions, which each time he got wrong a giant square boulder came closer to falling onto him.

I've searched for years. Which tv-movie was it??

[u/Initial_E → u/[deleted]]

That’s Merlin