On July 13, 1975, 22-year-old Susan Patricia Savage and her childhood friend, 21-year-old Patrick Alan Oliver, went for a picnic and swim at a spot along Mill Creek about twelve miles southeast of Walla Walla, Washington. Both had recently finished college; Savage graduated from Washington State University and Oliver had just returned from studying in France. They were found the next day, each shot in the head.

The initial investigation produced few leads and the killings went unsolved for years, leaving the families without answers and the motive unclear. Reports at the time discussed possibilities from a robbery gone wrong to a targeted attack, but investigators were unable to identify a suspect.

Anyone who knew Susan or Patrick, or who was in the Mill Creek area in mid-July 1975, is asked to share what they remember.