Parker Center, the LAPD headquarters in downtown Los Angeles, became a setting for an effort to recover details from detective Bill McGowen’s encounter with the Visalia Ransacker. The January 9, 1976, visit brought McGowen and fellow Visalia detective John Vaughan to a specialized hypnosis unit, where investigators prepared visual records of the confrontation before guiding McGowen back through his memory of an earlier stakeout.

Setting and Purpose

McGowen and Vaughan drove three hours south to Parker Center after arrangements were made for McGowen to undergo hypnosis. His encounter with the Ransacker was regarded as an important development in a case that had absorbed the Visalia Police Department, and the session was intended to elicit additional details that might help the investigation.

At Parker Center, the detectives briefed Captain Richard Sandstrom, director of the LAPD’s hypnosis unit. McGowen drew a diagram of the neighborhood where he had confronted the Ransacker, and a police artist prepared a composite sketch from his account. These materials gave the session a concrete focus: McGowen would revisit a particular place and encounter rather than recall the case only in general terms.

The Session in Room 309

The group assembled in room 309, where the diagram and composite sketch were placed on the table in front of McGowen. The hypnosis session began at 11:10 a.m. Sandstrom encouraged him to relax and directed his recollection back approximately a month, to the evening of December 10, 1975.

That night, officers had been deployed around Mt. Whitney High School in a coordinated stakeout intended to detect and apprehend the Visalia Ransacker. McGowen recalled taking a position in a front-facing garage at 1505 West Kaweah Avenue, watching a nearby house after shoe impressions had been found beneath Donna Hanley’s bedroom window. At Parker Center, this earlier surveillance operation became the point from which his guided recollection proceeded.

Investigative Significance

Parker Center’s role in the episode was procedural but consequential: it brought McGowen’s recollection, a neighborhood diagram, a composite sketch, and a specialized hypnosis unit together in one investigative setting. The account establishes the session’s purpose and method, but does not specify what new information, if any, hypnosis produced. Its significance lies in the attempt to revisit a crucial encounter and recover details that ordinary recollection might not have yielded.