Dateline: Secrets Uncovered (2017)

S10E01 The Devil in Disguise

Frank Rodriguez, a former Navy veteran, devoted himself to supporting underprivileged children, making it hard to believe he had any foes. Unraveling the identity of someone who would want him harmed posed a significant challenge. Additionally, the circumstances surrounding his death were shrouded in mystery, leaving investigators with the task of piecing together the clues to find his murderer.