"There."
"Pillar."
Wakahisa-san advanced one frame and pointed at the screen. "Right there."
"Pillar."
"OK, now watch how she waves her arms around like she's trying to grab something or catch her balance." Wakahisa-san played the video forward again until the train hit.
"Yep."
"The kimono woman totally pushed her."
"Can't see," Shimizu said, looking over Wakahisa-san's shoulder. He wasn't convinced. A structural pillar obscured the best view they had of the platform. Detective Wakahisa was looking for a suicide. She wanted to see the decedent step calmly off the platform, looking straight ahead. She wanted to see a lost soul wander into the station, scan the walls and ceiling as if searching for any other way, then peer down into the trackway like she was staring into her own grave. Wakahisa-san didn't see it.
Detective Shimizu was looking for murder. He almost never looked at the victims. Victims, by definition, aren't doing anything wrong. Whenever he saw someone, he was looking at a suspect. The woman in the kimono was definitely a suspect. She walked straight into the station, right up to the platform and stood perfectly still for more than half an hour. Both of the lines that stopped at that platform had come and gone while she stood there. The decedent walked up next to her and spoke to her, but she remained perfectly still.
The kimono woman stood her ground. It was the decedent who approached, who kept moving the entire time they stood next to each other. Both women were visible in the video, taken by a camera at the end of the platform, on the far side of the tunnel, but a structural pillar obscured the scene of the crime, the concrete right behind them. Shimizu didn't see murder because a pillar obscured his view. The killer needed footing to propel the decedent's body forward. One of them had planted a foot back, away from the track, and used that footing to push.
Neither of the kimono woman's feet were visible under her perfect hem. She walked like she was wearing geta, elevated, wooden sandals, and she clearly wore them all the time. The skirts of her kimono didn't move when the crime occurred, but they didn't move when she walked either. She seemed to float along about a centimeter above the ground. The decedent had dropped her phone and crouched to pick it up, turning toward the camera to do so. In that position only one of her legs was visible. With her center of gravity lowered, the decedent had better control of her balance. She wore flip-flops, rubber flip-flops, recovered from the scene. Shimizu was looking at the decedent's foot, and he only looks at suspects.
Several other people stood in the video, but none of them were close enough to push. Only one witness they interviewed claimed to have seen what happened. He said the kimono woman pushed the decedent. Shimizu looked at the witness's position in the video, and Shimizu only looks at suspects. The witness had entered the station about a minute before the decedent did. He stood almost behind the kimono woman, probably checking her out. Shimizu would have. Blocky surveillance video cannot show you how beautiful a woman is, but it shows how many heads she turns.
Wakahisa-san moved her mouse and clicked, playing the video forward from the moment of impact. "Look," she said, "watch the kimono woman run away."
She did run away, but not soon enough, not fast enough. First, she took three steps backward and collided with the witness. The kimono woman had not intended to kill. "Atrium camera," Shimizu said.
Wakahisa-san loaded the atrium video again and advanced it until the kimono woman appeared on the escalator. "She doesn't want to go through the exit. She must have a PASMO. She knows she's guilty." The much younger detective hesitated for a moment, thinking, then said, "but her PASMO would have been read when she entered."
"Yumiko Itsumoto."
"Wait, what? You know who she is?"
"Yep." Wakahisa-san was right about her PASMO, paid with her credit card, scanned on entry, no exit. They must not teach cadets how to pull transit records at the academy. Shimizu thought the only thing she was supposed to learn from being his partner was alcoholism. "Platform-3."
Wakahisa-san loaded camera 3 and advanced until the kimono woman came back down the escalator. The woman went straight into a bathroom and stayed there. Both detectives watched the bathroom's door. Wakahisa-san got impatient and started accelerating the video. "And she's still in there when we showed up! We should have looked in the bathroom."
"Pervert." They said Shimizu had no sense of humor. Wakahisa-san wasn't laughing. Maybe he didn't.
"What is she doing in there?"
Shimizu knew exactly what she was doing: hiding. She was scared and confused. The only thing he wasn't sure about was exactly what frightened her so much. Up to the moment of the crime, she moved placidly as an angel. Afterward she moved like an animal, thought like an animal. First, she tried to run, then she hid.
When the station closed for the night and the video went black, Wakahisa-san kept staring at the screen. "She could still be there," the young detective mused.
"She's at work."
"Oh, come on, Shimizu-san, how could you possibly know that?"
"Doorman." The kimono woman had arrived home at about 7:45 that morning, changed into her work clothes and departed. The staff at her building liked her. The doorman sounded genuinely concerned when he asked if she was OK. She had arrived wearing a yukata, not her kimono from the night before, and the doorman had thought nothing of it.
She must have calmed down some time in the night. She went somewhere. While she hid, she figured out where to go. Maybe she figured out how to leave the subway; that station would have been locked up for the night while she was still hiding. Maybe the bathroom had another exit. There were too many possibilities. The only thing clear to Shimizu was that the kimono woman had started improvising. She was not afraid anymore.
Shimizu turned back to his desk, grabbed his suit jacket from the back of his chair and started putting it on.