EAST MEADOW, N.Y. (CBSNewYork) — A Long Island woman is on a quest for justice in the murder of her sister nearly 40 years ago.

On March 25, 1980, Eve Wilkowitz was walking home from the Long Island Rail Road station in Bay Shore when she was kidnapped, held captive, sexually assaulted and strangled with a rope. She was 20 years old.

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Her killer was never found.

“I’m always looking over my shoulders, I live in fear because of this,” her sister, Irene Brociner, said.

Thirty-six years after the murder, Brociner said she still thinks about her sister every day.

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“She’s in my heart and my mind all the time,” Brociner said.

She hopes after all these years, someone who knows something will finally come forward and tell the authorities.

“I’m the only person on the face of the earth who can be her voice,” Brociner said. “It’s not going to bring my sister back … but it might have a little bit of closure for me.”

Police said the case remains open.

“If you know something, say something,” Brociner said. “This person could be walking around still or they can be dead. I really just don’t know, it’s in my mind 24/7.”

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Anyone with information can call anonymously to Crime Stoppers at 800-220-8477.