Syracuse police are once again asking for the public's help in bringing closure to the family of an 18-year-old who was brutally murdered in 2001. Jill-Lyn Euto was found stabbed to death in her James Street apartment. No one was ever arrested. As Iris St. Meran explains, Euto's sister still holds out hope that justice will be served.

SYRACUSE, N.Y. – Jenna Euto remembers her older sister Jill-Lyn fondly.

"Jill was a vibrant light that put out way before her time," she said.

Friday marked 15 years since the 18-year-old was found dead with multiple stab wounds in her James Street apartment. Police said on January 28, 2001, she made plans to watch the Super Bowl with her family. Her mom Joanne Browning and sister Jenna hadn't heard from her the rest of that day. Browning went to her job the next day but was told Jill didn't show up for work.

"Jill's family then became increasingly concerned and alarmed," said Syracuse Police Detective Tom Murfitt. "Jill's mother and sister went to check in on her at her apartment, and when they arrived, they had found her unresponsive, and it was apparent she had been the victim of a brutal homicide."

Police previously said neighbors saw her go into her apartment alone. No one was ever arrested for the crime. Murfitt said this case has one of the largest files. Many years later, they are hoping the public will come forward with information.

"Anybody could have information," Jenna said. "The killer could have said anything to anybody. To the killer's family: I can't imagine if it happened to one of your family members, and I know that you would want closure."

TWC News spoke to Euto’s mother in 2006 about Jill Lyn: "She had so much to give," Browning said.

Browning dedicated her life to tracking down her daughter's killer, but she died tragically in 2007. The work continues with Jenna Euto.

"The murderer needs to be brought to justice and pay for what he or she did," Jenna said, "so that they don't do this again if they already haven't. They killed a part of our family."

While no arrests have been made, police say they do have several people they're looking at.

Police ask that anyone with information about the case contact the cold case squad at (315) 442-5234 or submit tips online at syracusepolice.org.