Richard Allen is accused of killing 13-year-old Abigail Williams and 14-year-old Liberty German on an Indiana trail in 2017. Here are the key moments from the trial.

A state’s witness testified that she saw a man, who later came to be known as “Bridge Guy,” covered in blood and mud on the day of the Delphi murders, but became combative during a tense cross-examination as the defense pointed out discrepancies between her testimony and her previous statements to police.

Jurors saw the infamous "Bridge Guy" video and heard from eyewitnesses who claimed they saw the man on the Monon High Bridge trail.

Three witnesses who were on the Monon High Bridge trail the day Libby and Abby were killed, including one who said she was best friends with Libby's older sister, testified Tuesday that a man they saw on the trail is "Bridge Guy" — the primary suspect depicted in a grainy photo police later shared to aid their investigation.

The man dubbed "Bridge Guy" has long been considered the suspect in the murders of the two teens. Prosecutors have claimed that Richard Allen, charged with murder, was the man seen on the trail.

The forensic pathologist who performed the autopsy for Delphi eighth-graders Abby Williams and Libby German the day after they were found dead in the woods near the Monon High Bridge Trail in February 2017 backtracked on the stand.

Day 5 of the Delphi Murders trial included testimony from a witness who claims to have seen "Bridge Guy," the day Abby Williams and Libby German went missing.