Two cold cases, now, possibly, have new connections.

As police work to solve the disappearance of Christina Adkins, they're also trying to determine who murdered Pamela Pemberton.

And new developments in both investigations are giving Pemberton's family new hope.

Her sister was murdered and strangled to death back in 1994, and still, to this day, Sheila Pemberton is desperate for answers, desperate for justice.

"I really thought, for a lot of years, that her case was a cold case sitting on a shelf, no one paying attention to it," says Sheila.

Back in 1994, Sheila's sister, 30-year-old Pamela Pemberton's body was found in a vacant lot in Tremont.

She'd been strangled to death, possibly raped.

Then, 2½ months later, 18-year-old Christina Adkins disappeared.

Nineteen years later, a break in both cases.

New tips about the disappearance of Adkins followed the stories of survival from Ariel Castro's house of horrors.

On Friday, remains, possibly Adkins', were discovered near a highway exit ramp, not far from where Pemberton's body was found.

"Yeah, it did make me very hopeful, but it also made me very sad. It brings back a lot of flashbacks and old memories," says Sheila.

Also, a few weeks ago, the FBI spoke with Sheila, asking questions about their home and their lives while on Vega Avenue.

As it turns out, when Pemberton went missing, they lived just a block away from this man, Elias Acevedo, who's now a "person of interest" in the disappearance of Christina Adkins.

In August, investigators searched Acevedo's home on Vega Avenue.

The possible connection between Adkins and Pemberton is sparking renewed interest in both cases.

Now, while Sheila waits and hopes for new tips that may help police figure out who murdered her sister, she cherishes and remembers, every day, the friend she lost.

"She always called me Tina. Every day we were in each other's lives. We lived next door to each other."

Sheila says she does not recognize, nor did she ever know Elias Acevedo.