Reborn as a Widower, I Personally Send King Qi to Hell

In her previous life, she was the youngest female widower in the capital. He found out the truth about the murder of Wang Zhai, but was framed by the King of Qi and died unjustly on the execution ground. The moment the knife fell, the last thing she saw was a pill with the word "Qi" engraved on it. Reborn three years ago, everything has not yet begun. The murderer hasn't killed anyone yet, and the evidence hasn't been destroyed yet. She was still the humble widower who stayed with corpses all day long. In this life, she will no longer identify the murderer in public. What she wants to do is to detect the secrets of each corpse - the marks of strangulation, pinholes, calluses, ambergris on the skin scraps... Use the law as a sword and the evidence as a rope. Let King Qi watch the dog he raised bite his own throat. But she didn't expect that the only person who wanted to protect her in her previous life - Pei Zhiyuan, the minister of Dali Temple, would be more difficult to deal with than the murderer in this life. --- [Note]: This article is a slow read. The first three chapters focus on autopsy, reasoning, and investigation. The heroine's revenge is to "crucify the enemy with evidence", not a happy grudge.