Summary
Highlights
Eight months after getting married, Brian and Beverly Mock were found murdered in their rural Washington State home. Their friend discovered Brian's body and called the police. Both Brian, 30, and Beverly, 28, were shot three times at close range with a .22 caliber pistol. Beverly's mother highlighted their strong desire to have children and their trusting nature, making the crime inexplicable.
Evidence suggested Brian was shot in the living room, and Beverly was killed at the front door as she tried to escape, likely after hearing the shots. The killer then dragged Beverly's body next to Brian's and covered them with a sheet. A large blood trail with unusual striations led to the bodies, later identified as marks from a broom used to clean up. The killer also attempted to wipe fingerprints from doorknobs and light switches, inadvertently leaving blood smears. The television being on indicated a deliberate cleanup, not a hasty exit. Robbery wasn't the motive as valuable items and cash were untouched. The fact Brian likely opened the door to his killer suggested he knew the assailant.
Despite the killer's attempts to clean the crime scene, he left significant clues. He stepped on the sheet covering the bodies, creating a distinct zigzag shoe impression in the blood underneath. This impression was identified as a Madson brand work shoe. A palm print was also found on a door jamb in the bedroom, initially mistaken for an upside-down fingerprint. Its ridge characteristics suggested it was a palm print left as the killer steadied himself while cleaning. This palm print, however, did not match any in the Morpho database.
Police questioned neighbors, including Daniel and Jennifer Tvaris, who lived across the street. Daniel claimed he heard gunshots and saw a red pickup truck leaving the Mocks' driveway around 7:00 a.m., providing a very detailed description of the driver: a white male, roughly 6'2", 230-240 lbs, with long hair and a ponytail. Beverly's mother initially suspected Jeremy Flynn, a young man who had an altercation with Brian at a party and was believed to have stolen a handgun. However, the handgun wasn't a .22 caliber, and Flynn had an alibi. Daniel Tvaris's overly detailed account raised suspicion, especially as it was dark at the time of his alleged sighting.
A background check on Daniel Tvaris revealed he had served 16 years for manslaughter and had been released just four months prior. He was a difficult prisoner and violated his parole by moving to Washington State from Massachusetts to marry Jennifer, whom he met through a prison dating service. Washington police couldn't arrest him for the parole violation, but they saw an opportunity to get his palm prints. They invited Tvaris in to help create a composite sketch of the killers, hoping he would voluntarily provide prints.
As Tvaris entered the police station, Detective Jason Tate noticed his wet shoe prints matched the unique pattern found at the crime scene. Under the guise of eliminating his prints from the scene, police obtained both his fingerprints and palm prints. During questioning, Tvaris admitted to killing his own mother years ago. Within minutes, the bloody palm print from the crime scene was matched to Tvaris. Confronted with the palm print and the matching shoes he was wearing, Tvaris confessed, claiming Brian owed him $50 for a tattoo. He said he snapped and shot Brian after an argument, then shot Beverly when she tried to escape. He then dragged her body and meticulously cleaned up the scene, inadvertently leaving the crucial evidence.
Jennifer Tvaris later admitted she was at the crime scene after the murders and helped dispose of the murder weapon in Puget Sound, claiming she acted out of fear. In February 2008, Daniel Tvaris was sentenced to life in prison without parole. Jennifer received a one-year sentence. The exact motive beyond the $50 debt remains unclear to investigators.