My first encounter with a mystery novel by Kazuaki Takano was an immediately compelling one. From the opening page, the writing has a strong pull. Although the story is told in the third person, it slips deftly into Ryo Kihara’s inner state, rendering his fear through both thought and physical sensation with striking precision. Those scenes are so vivid that it becomes easy to inhabit his panic and uncertainty. The prose throughout is lean and controlled, the pacing tight, and the plot moves forward without slackness. It is a gripping read in the most straightforward sense.

At the center of the novel is the murder of an elderly couple. The suspect, Ryo Kihara, loses his memory after a traffic accident, and the only clue left in his mind is the image of “walking on stairs.” As the date of his execution approaches, the prison officer Nango joins forces with Junichi, a parolee, to reexamine the case. The novel is especially effective in the way it builds suspense, handles shifts in identity and perspective, and delivers its ending. The final stretch unfolds through multiple reversals, gradually disentangling the wrongful conviction, the mystery surrounding who is really who, and the motives behind the crime. The title image of the “13 steps” works well on more than one level: it evokes the staircase leading toward death, while also suggesting the layered procedures of the legal system.

What gives the book its depth, though, is not only the investigation itself. Through the viewpoints of a prison officer who carries out executions, a convicted killer facing death, and the families of victims, the novel opens into larger questions about capital punishment, the purpose of criminal penalties, and whether offenders can ever return to society. The emotional range is wide and unsettling: fear, remorse, rage, pity, a revenge impulse burning so fiercely it seems to consume everything, and, on the other side, a movement toward forgiveness that feels almost like divine deliverance. Nango’s inner life stands out in particular. His role as an executor of death is portrayed with a realism that makes the burden of “carrying out justice” feel heavy and morally complicated.

One of the novel’s strengths is that it never pauses to lecture. Ethical questions are woven directly into the story, so reflections on crime and punishment, vengeance and mercy, arise naturally from the characters’ circumstances. That restraint makes the impact stronger. While reading it, I was reminded of another Japanese crime novel, Keigo Higashino’s The Hovering Blade, which also spends considerable time examining juvenile crime and the problem of punishment. Wanting more legal background for these kinds of themes, I had even borrowed Luo Xiang’s Lectures on Criminal Law last year.

That said, a few plot points continued to trouble me after I finished the book.

The first concerns Ando. Why didn’t he simply kill Ryo Kihara after the murders to eliminate a witness? Instead, he coerced him into helping bury the evidence. If Kihara had not lost his memory in the traffic accident, the truth could have come out quickly once he assisted the police in locating the hidden items. Was Ando planning to frame him from the start, or did he have some other design in mind? Kihara’s memory also happens to return during the retrial, which feels somewhat too convenient.

The second issue involves the key evidence: the bankbook and the hatchet were buried together. Using the small hatchet as the murder weapon makes sense if the intention was to mislead investigators into suspecting a roaming serial offender. But the bankbook was something that should have been concealed as thoroughly as possible, so it is hard to understand why the two objects were not disposed of separately. Utsugi’s enormous inheritance also seems like something that should have drawn greater police suspicion. And since the bankbook was such an important clue, it feels odd that the search focused on combing through the mountains for physical evidence instead of tracing bank transactions through the financial system.

The third doubt concerns Mitsuo’s false evidence, which he buried near Gan’enji Temple in order to frame Junichi. If Nango and Junichi had never found that planted evidence, how was his scheme supposed to succeed? Was he going to intervene from behind the scenes and steer them toward it? An even more unlikely coincidence is that the fake evidence ends up being buried in the same location as the real evidence, despite the fact that a large police force had already searched the mountain after the crime and found nothing.

Even with those questions, the novel left a strong impression on me, especially because of the ideas it raises. Several lines from the book linger:

“When one person judges another in the name of justice, there is no universal standard for what justice is.”

“What crime destroys is not only what can be seen with the eyes. It penetrates deeply into people’s hearts and damages something fundamental within them. And people remain tormented by that fundamental wound for a very long time.”

“Everyone has a desire for revenge. That desire is love for the person who has been lost.”