Debra Alexandria Manning

Debra Alexandria Manning is known in the account chiefly through the circumstances of her death and the long effort to identify the person responsible. On December 30, 1979, she and her new boyfriend, Robert Offerman, were found dead in his Goleta condominium. Their killings became part of a series of attacks on couples that was eventually linked by DNA to the Original Night Stalker. The record gives few details of Manning’s life beyond this relationship and the events of that morning, but the changing interpretation of the case makes her death central to the account of how an apparently local crime was connected to a much wider pattern.

Identity and Relationship

Manning was Offerman’s new girlfriend. Offerman was an osteopathic surgeon, and his friends Peter and Marlene Brady were expected at the condominium for a tennis game with the couple. Their arrival supplies the account’s brief glimpse of Manning’s ordinary social setting: she was part of a couple whose friends anticipated spending time with them, not a figure introduced through any known connection to the criminal investigation.

The source does not establish Manning’s occupation, family background, or earlier life. It therefore presents her less through a full biography than through a sharply bounded sequence: her relationship with Offerman, the home they shared, and the later investigation into their deaths. That limited record is important to preserve. The violence did not make her identity reducible to a set of crime-scene details, but those details are nearly all the account provides about her personally.

The December 1979 Killings

On the morning of December 30, the Bradys arrived at 767 Avenida Pequena for their scheduled tennis game. They found a sliding glass door open and entered, calling for Offerman. From the hallway, Peter Brady saw a woman lying on the bed and told Marlene Brady; they began to leave rather than interrupt. When deputies arrived, Marlene was outside and reported that two people were dead inside.

Manning was found on the right side of the waterbed, with her wrists bound behind her. Offerman was at the foot of the bed, holding a piece of nylon twine. Investigators inferred that the attacker had used a screwdriver to force entry, probably while the couple slept. They considered it possible that he presented the intrusion as a robbery: two of Manning’s rings had been hidden between the mattress and bed frame. The account distinguishes these interpretations from established facts; they were part of investigators’ reconstruction, not a known explanation supplied by Manning or Offerman.

Neighbors reported hearing gunfire at about three in the morning, with a pause before another shot. Offerman had been shot three times and Manning once. The scene also retained ordinary traces of the holiday: a wreath on the front door, a small pine tree in the entryway, and leftover Christmas dinner in the refrigerator. Investigators concluded that the killer had taken some of the food. These details place the deaths within the couple’s domestic surroundings, while offering no evidence about Manning’s thoughts or experience that night.

The Investigation and a False Lead

The crime scene suggested that the intruder had been active around the property before entering. Investigators followed star-shaped shoe impressions around Offerman’s condominium and noted a trampled flowerbed at the vacant unit next door. Evidence there, including nylon twine in the bathroom, suggested someone had been staying in the empty condominium. The observations helped build a picture of preparation and movement around the home, but did not identify the person responsible.

In 1980, investigators focused on Brett Glasby, a local burglar known for his violent temper. He lived in the area, had a tangential connection to Offerman’s workplace through suspects in an assault on a building janitor, and had access to a .38 Smith & Wesson, the type of firearm used in the killings. However, ballistic testing ruled his gun out, and investigators found no physical evidence linking him to the crimes. Glasby and his brother Brian were killed in Mexico in 1982, but Santa Barbara investigators continued to consider him responsible for the Offerman-Manning and Sanchez-Domingo double killings. The accumulating suspicion never became proof.

DNA Link and Significance

For years, the Goleta killings were discussed as the work of the Creek Killer, a name used locally for the attacker associated with the thwarted attack and two double homicides. Because the targeted couples were unmarried, some people speculated that the killer was a religious zealot. Those theories, like the suspicion of Glasby, reflected attempts to explain the pattern before investigators could establish who was responsible.

In 2011, investigators developed a DNA profile from degraded material recovered from a blanket at the Sanchez-Domingo crime scene. The profile conclusively linked the Goleta cases to the East Area Rapist/Original Night Stalker. The DNA came from that other crime scene, rather than directly from Manning’s death, but it changed the understanding of her case: what had long been treated as a local series could now be connected to a broader sequence of crimes. In retrospect, the Glasby theory was a red herring. Manning’s importance in the account lies both in the life abruptly ended in Offerman’s home and in the case’s eventual contribution to recognizing the reach of the Original Night Stalker’s crimes.