Joji Obara’s Series of Drugging and Sexual Assaults

Joji Obara’s repeated drugging and sexual assaults became a major investigative lead in the search for Lucie Blackman. The case exposed a recurring pattern in which women, many of them foreign, were approached through nightlife venues, incapacitated with drugged drinks, and assaulted; investigators later found that Obara had also recorded many of these crimes. The pattern resembled the circumstances of Lucie’s disappearance, though the recordings did not establish what had happened to her.

Pattern and Emergence

The investigation’s early leads included an account from a woman employed at a hostess club. Some years earlier, a frequent customer known as Yuji had invited her on a drive to the coast, taken her to a marina, and then brought her to his apartment in Zushi, where she was drugged and assaulted. She wanted to report what had happened, but Slick, the club’s manager, talked her out of going to the police. He warned other employees about the customer and later passed investigators what he knew, including the marina’s name. The information proved useful as the search for Lucie continued.

Reports about Joji Obara, a wealthy real-estate owner and property developer who regularly visited foreign hostess clubs, brought another possible lead. The police already knew of him when the information reached them. By October 1, Obara was a definite suspect; on October 12, police arrested him for sexual assault in a separate case. Their announcement described a broader pattern of men being lured into drives with the promise of seeing the ocean, given drugged alcoholic drinks, and assaulted after losing awareness. The police said that the similarity to Lucie Blackman’s disappearance warranted a full-fledged special investigation headquarters, staffed by more than a hundred officers.

Pattern, Recordings, and Investigative Limits

Prosecutors later described the assaults as a repeated practice dating back at least to 1973: Obara brought women to his Zushi apartment, gave them drinks containing drugs that caused drowsiness or impaired functioning, and assaulted them after they lost consciousness. He recorded the acts, which he called “subjugation play.” The investigation’s evidence thus pointed beyond a single suspect or incident to a pattern involving women encountered through clubs and drawn to private residences.

A prosecution account of one victim’s experience showed how an apparently ordinary invitation could lead into that pattern. Obara met her at the club where she worked, proposed a weekend trip to his coastal apartment, and drove her from outside the Akasaka Tokyu Hotel to his Zushi address on March 31. At the apartment, he gave her a drink containing a sleep-inducing drug; after she lost consciousness, he assaulted and filmed her. She regained consciousness the following night, April 1. The account gave investigators a concrete sequence against which other women’s reports could be considered.

Police found several kinds of sleeping pills among items taken from Obara’s homes. They confirmed more than a hundred recordings, on 8 mm and VHS cartridges, showing assaults on mostly Caucasian women who appeared unable to resist. The tapes came from his former home in Setagaya Ward and a condominium in the Zushi area of Kanagawa Prefecture. Their number and organization made them powerful evidence of repeated crimes, but they did not resolve the central question in Lucie Blackman’s disappearance: she did not appear in them, and none had been made around the period when she vanished.

At the end of October, the Tokyo District Public Prosecutor’s Office indicted Obara on the first of many charges. He did not tell investigators what had happened to Lucie. His silence left the two strands of the case—documented assaults and the missing woman’s fate—closely connected by the investigative pattern, but not joined by proof establishing what had happened to her.

Reporting Access and Unresolved Identities

Finding people willing to discuss Lucie Blackman required the reporter to enter the Roppongi nightlife without presenting himself as a journalist. Many foreigners working there were undocumented or otherwise vulnerable, and they distrusted both police and reporters. He adopted the appearance of a well-paid foreign businessman: a better suit without a necktie, a fabricated name and business card, and a second cell phone. He described his invented occupation as an insurance investigator, close enough to his actual work to sound plausible, and spent weekends in the district trying to find someone who knew Lucie or the customer who had taken her toward the coast.

The search did not make every name fit neatly into a single identity. The reporter could not determine whether Georgie and Yuji were aliases for the same man. That uncertainty mattered to the investigation: information from nightlife contacts could point toward a recurring suspect, but names and descriptions alone could not establish who the customer was or what had happened to Lucie.

Public Attention and the Reporter’s Approach

The inquiry widened beyond the foreign women first associated with the pattern. Police found several kinds of sleeping pills among the materials taken from Obara’s homes, which investigators thought could also have been used against Japanese women; once that possibility became public, media attention intensified. The growing coverage reflected a widening victim pool, even as the evidence against Obara and the unresolved question of Lucie Blackman’s fate remained distinct.

The reporter also had to manage his own visibility while pursuing the story. Because his face was already somewhat familiar in Roppongi, he gave a tape to Matchie, a junior reporter, and asked him to interview Slick. Matchie’s account did not give the article enough force to proceed, so the reporter accompanied him to meet Slick at Club Katy for a follow-up. Delegating the first interview was a practical precaution, but the weak result made direct reporting necessary: access to the source depended not only on concealment, but on returning to the encounter himself.