Two years after John Zera was murdered, an anonymous tip about a Franklin High substitute teacher with an unusual interest in boys' feet would generate a new prime suspect.

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The day after John Zera's body was found, Daniel Acker was found standing over the crime scene in Whitnall Park. His alibi for the day of John's death was shaky, but police dismissed him. Acker would strike up a correspondence with the Zera family and start his own investigation into the case, pointing the finger at a mental patient at the facility where he worked.

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In 2009, police investigating the 1976 homicide of John Zera catch a break when a swim coach is arrested for child molesting. A search of the man's condo reveals clues about John's case.

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