I guess the siblings were played by the same girl/boy. It was a TV, color movie, I saw it in the early 90’s. One of them played the piano and has his/her hands transplanted or something like that, with visible stitches on the wrists. In some weird scene, some pair of hands were kept inside a glass jar in the fridge…
The girl had long brown straight hair.
Need to know!!! Can you help me, please??
Hands of a Stranger (1962)?
No :(. Thanks anyway.
The siblings were children.
Goosebumps episode “Piano Lessons Can Be Murder”? https://www.youtube.com/watch?v=vTGTTrvIqSE