Richard Allen, a former CVS employee, is on trial for the murders of Liberty German and Abigail Williams, two middle school students killed in 2017. The prosecution claims that Allen was at the scene of the crime and that a gun found in his home matches a bullet found near the victims' bodies. The defense argues that Allen is innocent and that other suspects could have been involved. Key evidence in the case includes witness testimony, a Snapchat video from Liberty's phone, and Allen's own statements to authorities.