Episode 15 recap: Tang Dade was brought to justice.

Tang Dade had heard about Li Guo asking Liu Xiao Yu to buy white chrysanthemums, so he told this to Wen Ren, which would enable Wen Ren to more quickly identify the target in the crowd. Tang Dade discussed this with Zhou Hao, and Zhou Hao's implied meaning was also to eliminate Liu Xiao Yu, so Tang Dade became more determined in his plan, even if Zhou Hao hadn't said anything, he had already made up his mind.

In the evening, Tang Dade personally brought the gecko to Jira Yu, claiming it was a request from Liu Xiao Yu. He told Jira Yu that the gecko could eat ants, so he could keep it in his room. However, Jira Yu was a bit afraid, and Tang Dade said that if he didn't want it, that was fine. But when Jira Yu thought about the gecko being able to eat ants, he was conflicted, and ultimately decided to accept the gecko.

Then Tang Dade said he needed to go to Liu Xiao Yu's room to give him some medicine. Jira Yu knew about their relationship, so naturally he didn't suspect anything. Jira Yu didn't realize that his trust in Tang Dade would cost him his life. Tang Dade waited in Liu Xiao Yu's room until Jira Yu fell asleep, knowing that Liu Xiao Yu would take the medicine and not wake up in the meantime.

Then he timed it carefully, released the ants and directed them to Jira Yu's room. Because of the presence of the gecko, the ants were more excited, and they crawled all over Jira Yu's bed. When Jira Yu was bitten awake by the ants, he had already been poisoned. He struggled on the bed, but it was futile. At this time, Tang Dade was outside the door, using a camera to film Jira Yu's death throes.

Afterwards, he cleaned up the scene and put the ants back in the incubator in Liu Xiao Yu's room. He returned to the lab before the scheduled time and transmitted the footage of Jira Yu's death through the dark web to Wen Ren. Wen Ren was very happy to see the footage, finally getting his revenge. Watching Jira Yu's painful death seemed to have brightened his inner world.

However, he needed to fulfill the agreed promise, which was to go kill the person who helped him get revenge, Liu Xiao Yu, at the designated time and place. At this time, Wen Ren did not know that the one he was conversing with was not actually Liu Xiao Yu, but Tang Dade, who was manipulating him unknowingly, making him an accomplice.

Tan Jing Tian came to the interrogation room to see Tang Dade, and Tang Dade tried to cunningly make Tan Jing Tian feel guilty, implying that Tan Jing Tian had a "Detective Conan" effect, where people around him always ended up in trouble. Tan Jing Tian almost fell for his tricks, but fortunately Xiao Xiao was there to keep Tan Jing Tian clear-headed and not be influenced by Tang Dade's words.

Afterwards, Team Leader Ru and Xiao Xiao came to comfort Tan Jing Tian. They told him that the deaths of the people around him were not his fault, and that just because trouble occurred where he was, it didn't mean he brought disaster, but rather, he brought the truth. This touched Tan Jing Tian deeply.

Liu Xiao Yu could finally be laid to rest, with the truth revealed, and he was proven completely innocent. Tan Jing Tian still regularly visits the nursing home to care for Wen Hui, treating her like a mother. With the case resolved, Tan Jing Tian informed Jin Ling in Thailand about the events that had occurred in China. Jin Ling was deeply saddened to hear about Li Guo's death. While she was quietly crying in the autopsy room, Sha came to find her. After some small talk, they started discussing the two bodies in the autopsy room. Jin Ling had an idea to verify their identities, but the process would not guarantee the integrity of the remains. Sha immediately consented, and Jin Ling said she would contact the relevant experts as soon as possible.

Their conversation had been observed and overheard by Mario, who was monitoring the autopsy room. He seemed quite anxious after hearing that Jin Ling had found a way to identify the bodies.