The incident involving the fishing boat Investor took place on September 7, 1982, off the coast of Craig, Alaska. The boat was found burning, and all eight people on board were presumed to have been killed, although only seven bodies were recovered due to their badly burned state. Among the victims were Mark Coulthurst, the owner of the boat, his wife Irene, and their two children.

In September 1984, a suspect named John Kenneth Peel, hailing from Bellingham, Washington, was arrested in connection with the murders. Peel faced trial for the crime, but his first trial resulted in a hung jury, meaning the jury was unable to reach a unanimous decision. He underwent a retrial in 1988, which ended in his acquittal, meaning he was found not guilty of the charges.

The case remains unsolved, and despite the arrest and trials, no one has been convicted of the murders on the Investor.