A talented musician, composer, and conductor of a boys’ choir—also a maniac killer… With the help of a hellish time machine (a chronoscope), he pulls small singers out of the past and, after they perform a concert piece, kills them…
No one knows how many children’s souls he would have destroyed during his life if, one day, the novel’s main character—a scientist, a specialist in interspatial vacuum—after returning from a long assignment, had not by chance ended up at a concert of a boys’ choir and recognized himself in the soloist, a twelve-year-old boy…