Fate

Following the superficial mystery of a murder case, it delves into the problem of scientific ethics hidden behind it.

Through the case, it makes readers focus on who is the culprit and what trick was used at the beginning.
However, as the story flows, it becomes clear that the essence of this case is not just finding the culprit.

The murder case is rather just a device to bring the tenacious relationship between the two main characters and the huge secret hidden behind them to the surface.

Now the question shifts to what the fate that binds the two men is.

Does human free will exist in the face of the giant power of fate?
It poses philosophical questions about where the scope of that existence is, if it exists.

It's a bit forced and contrived, but it's an early work where the author's style is clearly revealed.