In the late 90’s I rented a VHS tape from the library that I believe was part of a series of movies involving kids on adventures. In this particular movie, kids go into an old stone castle to explore it and they discover that a vampire lives there. The scene I remember the clearest is one where one of the kids, while hiding, witnesses the vampire kill somebody. The person is strapped to a table and the vampire walks up and pulls a curtain (like a shower curtain) closed and rips their guts out. The scene is done from the kids point of view so it’s silhouettes seen on the curtain. Then the vampire draws back the curtain and there is blood all over him and all over everything. This movie was in colour and had a very kids version of Indiana Jones vibe. Please help me find this movie, it’s been driving me insane!