New Charges in Gilgo Beach Case Question Previous Murder Conviction

Rex Heuermann faces additional charges, casting doubt on John Bittrolff's conviction for similar murders in the 1990s.

Prosecutors allege Heuermann killed Sandra Costilla, linking him to earlier crimes.
John Bittrolff, convicted for two similar murders, maintains his innocence.
New forensic evidence suggests Heuermann's involvement in Costilla's death.
Questions arise about the validity of forensic methods used in Bittrolff's trial.
Victim families express ongoing grief and demand thorough investigations.