Robert Offerman—Alexandria Manning Partnership

Robert Offerman and Debra Alexandria Manning’s partnership is recorded in a brief, stark interval: she was his new girlfriend, they had plans with friends on December 30, 1979, and both were found dead in Offerman’s Santa Barbara condominium. The book reconstructs their connection not through a shared history or their own accounts, but through the visit that brought their friends to the scene and the investigators’ careful reading of what had happened inside.

Relationship and Setting

Offerman was an osteopathic surgeon, and Manning was described as his new girlfriend. Their relationship is established directly, but the account offers no extended biography of either person, no account of how they met, and no description of their private life together. It places them together at his condominium at 767 Avenida Pequena, where they were expected to meet friends for a tennis game on the morning of December 30.

The limited evidence matters: the relationship is visible through a planned ordinary activity, not through retrospective speculation about its depth or duration. Their friends, Peter and Marlene Brady, came to the condominium as scheduled. The visit was meant to begin with a game; instead, the open sliding door and the lack of an answer from inside made them the first people to discover that something was wrong.

The Planned Visit

Peter Brady entered the living room and looked down the hallway toward the bedroom, then returned to Marlene. The couple began to leave, thinking they might be interrupting, but Peter turned back because the situation did not seem right. Their return to the bedroom confirmed that Offerman and Manning were dead. When deputies arrived, Marlene was outside, crying.

This sequence gives the partnership a recognizable social setting: Offerman and Manning were not alone in the account’s final known circumstances, but were expected by friends who knew their plans. The tennis appointment anchors the scene in an ordinary calendar of shared arrangements. Its interruption also explains how the deaths came to light; the Bradys’ arrival, hesitation, and decision to look again brought the scene to the attention of authorities.

Investigative Reconstruction

Investigators found Manning on one side of the waterbed with her wrists bound. Offerman was at the foot of the bed, holding a length of the same white nylon twine. The evidence suggested to investigators that the attacker may have ordered Manning to tie Offerman, and that she did so without securing him tightly. They thought Offerman may later have broken free in an attempt to resist. These were reconstructions from the scene, not a surviving account from either partner, and the book presents them as possibilities rather than certainties.

Neighbors reported hearing gunfire at about three in the morning, with a pause before another shot. The account records that Offerman was shot three times and Manning once. These details establish that both partners were killed in the same attack, while leaving much of the sequence between the attacker’s entry and the gunfire uncertain. The scene offers evidence of a shared ordeal, but cannot supply their words or individual understanding of what was happening.

What the Scene Reveals—and Cannot

The condominium retained traces of the holiday and of an interrupted domestic routine: a wreath on the door, a small pine tree in the entryway, and leftover Christmas dinner. Investigators concluded that the killer had taken food from the refrigerator. The details place the attack against the season and the couple’s planned meeting, but do not reveal how long Manning and Offerman had been together or what their partnership meant to them beyond the fact that they were a couple and were together that night.

Their relationship is therefore inseparable from the limits of the record. The Bradys’ appointment, the placement of the twine, and the investigators’ cautious reconstruction provide fragments of context, not a complete portrait of a couple. The account preserves the connection in the form in which the case could establish it: Offerman’s new girlfriend, a morning plan with friends, and two lives ended in the same home.