Crime scene: 162 mystery solving puzzles to find out who the murderer is

Chapter 88 The hazy scream of the moonlit night
Ginji Zenigata, the most famous detective in Jiangdu, strolled to the bottom of the statue of Yushima Tenjin on a gloomy night with a hazy moon.Suddenly, he heard a scream tearing the night sky from the steep slope, and he rushed over in surprise to see a woman lying dead under the high steps, with an arrow sticking straight from her back.Beside him was a man dressed as a son, standing there with a blue face.When Ginji asked him what was the matter, the man replied: "I was about to go up the steps when suddenly there was a scream from the Jingu courtyard above the steps. This girl rolled down from the top and I was stunned. Someone must have shot the arrow from somewhere in the Jingu compound, but because it was dark and I was under the steps, I didn't see the villain's shadow.

But Zenigata Ginji didn't believe this guy's words, and instead arrested him as a villain.

So, why do you say?
[Answer] If it is true that the woman rolled down as the suspect said, then the arrow must have been bent or even broken due to the collision, but the arrow on the deceased was inserted straight, so the suspect must be lying.

(End of this chapter)