Overview: HEI reports to SUM and TING on what he has found in HUNG’s room. He suspects HUNG has joined a religious cult. YIN goes from house to house trying to find out more about the case. According to a videotape provided by a neighbor of HUNG’s, HUNG and WILSON had a fight on the rooftop the night before he died. SUM calls TING back to the police station, where he tells her about his discovery of SZ and HUNG’s relationship. YIN and SUM have an argument. YIN accuses SUM of favoring SZ during his investigation. This nevertheless inspires SUM, who returns to where HUNG ended his life with TING immediately. When they get there, SUM points out that HUNG’s death might have something to do with the Memory Palace memory skills. Later in the evening, SZ gets a call from WILSON threatening to…