Wen Yeming gave Wu Tong’s medical report to Ke Jingping. She said that Liu Zi was dead, so it was impossible to determine who he had told about Wu Tong’s allergy to flower water. Wen Yeming suggested that Bai Qingkui, Zong Fang, or the mole within the station could all be possibilities. She mentioned that Xu Weihua was the one who interrogated Wu Tong that day, and she had smelled a faint scent of flower water on him in the corridor. Wen Yeming added that she had inquired with other colleagues, and they confirmed that Xu Weihua had indeed been using flower water these past few days. Zhu He expressed doubt that Xu Weihua could devise such a cunning plan, but Ke Jingping ordered him to detain Xu Weihua and personally conduct the interrogation.
Xu Weihua was brought to the interrogation room by Zhu He. He asked Zhu He if there had been a misunderstanding. Zhu He questioned him about where he was going, to which Xu Weihua replied that he was going on a mission. When asked about the nature of the mission, Xu Weihua revealed that Ling Han had instructed him to follow Yun Hongshen. Yun Hongshen spotted Mi Lan making a call in a phone booth and hurried over. However, he was unaware that Mi Lan was tapping a message on the receiver with her finger, informing Ling Han that their cover was blown and urging him to evacuate immediately. After Mi Lan left, Yun Hongshen entered the booth to investigate, but Mi Lan captured this scene on camera.
Ke Jingping demanded that Ling Han explain the phone call he had received in his office earlier. Ling Han claimed that he had prepared a surprise for him, which, if used properly, could eliminate the Japanese spy network in Changsha in one fell swoop. He requested a private conversation with Ke Jingping, who then led him to the interrogation room. Ling Han insisted that the phone call must have been a deliberate attempt to frame him or a deliberate act by the caller. He informed Ke Jingping that Ji Fang was suspicious, as one of his lovers was a radio operator who happened to work for Zong Fang.
Yun Hongqi asked Xiao Dao if his grandmother would still be alive if he had returned home earlier that day. Xiao Dao replied that if he had returned earlier, he would have encountered the murderer, who would have harmed Yun Hongqi as well. He reminded Yun Hongqi that his grandmother loved him most and wouldn’t want to see him get hurt. Yun Hongqi expressed his inability to understand, while Xiao Dao declared his intention to kill the murderer on Yun Hongqi’s behalf. Yun Hongqi questioned if he knew the kind of person they were dealing with and the possibility of not returning. Xiao Dao stated that he had no intention of coming back, prompting Yun Hongqi to urge him not to say such things.
Yun Hongshen and Zhu He met in secret. Zhu He expressed surprise that Ling Han had a backup plan. Yun Hongshen remarked that it was not unusual for someone like Ling Han to have a contingency plan. Zhu He inquired about the identity of the person who called Ling Han, but Yun Hongshen said it was not the right time to reveal it yet. Zhu He informed Yun Hongshen about the radio station, which triggered a realization in Yun Hongshen, causing him to rush out.
Yun Hongshen called Wen Yeming’s office, but Chen Dongping answered and told him that Wen Yeming was not there and her whereabouts were unknown. Yun Hongshen immediately called Secretary Wu to ask if he had been following Ling Han recently and if he knew the location of Ling Han’s safe house. Secretary Wu admitted that Ling Han was very alert, but he had narrowed down the approximate location to the Xiangyang Street area. Through his own analysis, Yun Hongshen correctly identified the location of Ling Han’s safe house and found Wen Yeming there.
Yun Hongshen urged Wen Yeming to tell him about her mission, but she refused, stating that she would not disclose it unless Ke Jingping agreed. Yun Hongshen questioned if she understood the danger she was in, as Ling Han could very well communicate with his accomplices and have her killed. Wen Yeming acknowledged the danger but insisted on completing her mission. She revealed her real name to be Wen Yanz姿 and confessed that while she used to be excited about the missions assigned by Ke Jingping, this time she felt regret for not having the chance to say goodbye to Yun Hongshen. Yun Hongshen declared his intention to stay and accompany her to complete the mission, vowing to protect her.
Ke Jingping learned of this and scolded Yun Hongshen, who assured him that Ling Han would definitely try to communicate. As expected, Ling Han asked the guard to fetch him a book, which was a prearranged signal with his people. Finally, at Ling Han’s safe house, Wen Yeming learned that they were going to meet someone with the code name “Mr.” at 12 o’clock the next day. Ke Jingping and his team were determined to intercept this person.
