On February 13, 2017, teenagers Abigail Williams and Liberty German went for an afternoon hike along the Monon High Bridge Trail in Delphi, Indiana. They never returned home. Their bodies were discovered the following day in a rugged wooded area near Deer Creek, setting off a multi-year national obsession that baffled law enforcement and internet sleuths alike. For more than five years, the case remained an agonizing cold puzzle until the October 2022 arrest of local resident Richard Allen, culminating in his landmark 2024 trial and conviction.
Understanding this high-profile case requires looking past sensationalized online rumors and examining the concrete timeline, the digital footprint left by the victims, and the forensic evidence that ultimately secured a conviction in Carroll County.
The Disappearance and Discovery
Abby (13) and Libby (14) were dropped off by a family member near the Monon High Bridge on a crisp winter afternoon. When they failed to show up at their scheduled pickup location later that evening, frantic family members contacted local authorities. Search parties scoured the wooded trails surrounding Delphi through the night.
On the morning of February 14, 2017, searchers discovered the victims' bodies roughly half a mile east of the abandoned railroad bridge. Autopsy findings later established that both teenagers suffered fatal sharp-instrument injuries. The crime scene immediately presented investigators with profound challenges due to weather exposure, heavy foot traffic from early searchers, and a lack of immediate eyewitnesses.
The Digital Clue: The Bridge Guy Video
The investigation shifted dramatically when law enforcement analyzed Liberty German's smartphone. Investigators recovered a short video file recorded at 2:13 p.m. on the day of the murders. The footage showed an unidentified man walking across the narrow, elevated railway ties of the Monon High Bridge.
Alongside the visual footage, the audio captured a man's voice uttering two chilling phrases: "Down the hill."
This digital evidence became the centerpiece of public appeals. Law enforcement released stills and short audio loops of the suspect, dubbing him "Bridge Guy." For years, millions of amateur sleuths analyzed his jacket, gait, and cap, trying to match the grainy digital artifacts to local residents or passing travelers.
The Breakthrough and Richard Allen's Arrest
The case turned in late 2022 when a state police investigator reviewing old tip logs rediscovered a overlooked interview document. Back in February 2017, Richard Allen—a local pharmacy technician who lived in Delphi—had voluntarily informed a conservation officer that he was walking on the trail around the time the girls disappeared.
That initial tip sheet had sat misfiled or overlooked for years. Once investigators resurfaced the report in September 2022, they executed a search warrant on Allen's residence. Forensic testing performed by the Indiana State Police Laboratory analyzed a Sig Sauer .40-caliber pistol seized from Allen's home. Officials matched an unspent cartridge found on the ground between the victims' bodies to the firearm, establishing a physical nexus.
Allen was arrested on October 26, 2022, and formally charged with two counts of murder.
The Landmark Trial and Verdict
The courtroom proceedings began in October 2024 inside Carroll County, with the jury sequestered from Allen County. The prosecution presented a multifaceted case, highlighting:
- Ballistics Evidence: State experts testified that the unspent round recovered at the crime scene matched the mechanics of Allen's personal firearm.
- Cellular and Witness Testimony: Multiple witnesses placed a man matching Allen's general description and clothing near the bridge that afternoon.
- Incriminating Statements: Prosecutors introduced numerous recorded jailhouse calls and statements where Allen made admissions regarding the killings.
The defense team countered by challenging the reliability of the ballistics matching, pointing out the lack of direct biological DNA linking Allen to the victims, and attempting to introduce alternative theories regarding third-party involvement.
After roughly 19 hours of deliberation across three days, the jury returned a guilty verdict on all counts. In December 2024, Judge Frances Gull sentenced Richard Allen to 130 years in prison—65 years for each victim. The case is presently navigating appellate review phases as defense counsel challenges evidentiary rulings from the trial.
Frequently Asked Questions
What was the official cause of death for the Delphi victims?
The Carroll County Coroner ruled the deaths of Abigail Williams and Liberty German as homicides caused by sharp-instrument trauma.
How did police connect Richard Allen to the crime scene?
Investigators connected Allen through an archived tip record from 2017 in which he stated he was on the trail that afternoon, combined with forensic ballistics matching an unspent cartridge found near the bodies to his personal firearm.
Why did the trial take nearly two years after the arrest?
The pre-trial phase involved extensive legal motions regarding protective orders, changes of venue, defense representation disputes, and complex evidentiary hearings regarding third-party suspect theories.
What is the current legal status of the case?
Following his conviction and 130-year sentence handed down in late 2024, Richard Allen's legal team has pursued post-conviction appeals focusing on trial court rulings and due process claims.
