Three murders in Austin, Texas, and little evidence to go on. Did a man testing a thermal imaging camera inadvertently capture the image of one of the killers? "48 Hours" correspondent Maureen Maher investigates. Watch more full episodes of "48 Hours" on Pluto TV.

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Crime. Social justice. Impact. "48 Hours" investigates the most intriguing crime and justice cases that touch on all areas of the human experience including greed and passion. "48 Hours," which premiered in 1988, has developed a rich history of original reporting and impact journalism that has helped exonerate wrongly convicted people, caused cold cases to be reopened and solved, and along the way changed lives.

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