Macabre Serenade (1968)

Name: Macabre Serenade
Genre: Horror, Mystery
Released: 1968-05-01
Duration: 89 min
Cast: Boris Karloff, Julissa, Andrés García, José Ángel Espinosa 'Ferrusquilla', Beatriz Baz

Relatives of a recently deceased man meet at his eerie castle for a reading of the will. They encounter a sinister piano player who turns out to be a toy maker, and his toys are imbued with murderous intentions.