David G. Meirhofer (June 8, 1949 - September 29, 1974) was an American serial killer who committed four murders in rural Montana between 1967 and 1974 three of them children. At the time, the Federal Bureau of Investigation was developing a new method of tracking killers called offender profiling, and Meirhofer was the first serial killer to be caught using the technique. Offender profiling is a method used to learn clues about the characteristics of an unknown killer from evidence at the scene of the crime. Among Meirhofer's victims was seven-year-old Susan Jaeger, who was taken from her tent at night during a family camping trip. He left no ransom request and no physical evidence. However, the offender profiling technique, which was first used in this case, was employed about a year after the kidnapping.
Contributions by Kenatipo, Treybien, and Good Olfactory.