Shock revelation about the scene of Fall City murder where teen slaughtered family at lakeside mansion READ MORE: Lawyers 'theory' of Fall City boy, 15, 'who slaughtered his family By JAMES GORDON FOR DAILYMAIL.COM Published: 18:52 EST, 16 November 2024 | Updated: 18:56 EST, 16 November 2024 e-mail 8 View comments Prosecutors are accusing defense attorneys of 'altering the crime scene', violating a court order during their investigation of a chilling case in Fall City, Washington, that saw a 15-year-old boy allegedly murder his family. The King County Prosecuting Attorney's Office claims the defense team mishandled evidence while conducting an unsupervised search of the home.
The boy, whose identity remains withheld due to a court order, is charged with killing his parents, Mark Humiston, 43, and wife Sarah, 42, along with his younger siblings: Benjamin, 13, Joshua, 9, and Katheryn, 7. The gruesome murders occurred in the early hours of October 21 at their $2million luxury lakeside mansion on Lake Alice Road Southeast. The only survivor, an 11-year-old girl, escaped after being shot, seeking refuge at a neighbor's house.
According to court documents, the teen allegedly staged the crime scene to implicate his 13-year-old brother. He then called 911, claiming his younger sibling had shot the family before turning the gun on himself. However, investigators quickly debunked his version of events citing autopsy results and ballistic evidence.
Electrical engineer Mark Humiston, 43,.