DELPHI, Ind. (WDRB) -- Ten months after two Delphi, Indiana teens disappeared, the search continues for their killer.

Dr. Phil McGraw focused his "Dr. Phil Show" on Wednesday on the murders of Liberty "Libby" German and Abby Williams.  The best friends were killed February 13, 2017. 

Libby's grandfather, Mike Patty, retraced the path the girls took that afternoon.

"We're on the high bridge where girls came out to take pics that afternoon and the person whose responsible for this caught them isolated on the bridge and did what he did - murdered our girls," he said.

A photo of 13-year-old Abby turned out to be last picture of her alive. It was taken by her best friend, 14-year-old Libby. The girls went out for a hike on a popular trail near Delphi Indiana on that February day. The picture was taken at 2:07 p.m. It was just an hour later that relatives trying to pick them up were unable to reach them.  

Their bodies were found the next day. 

The best friends died together, but left behind two important clues. The first is a grainy image from Libby's phone of the man police believe is the killer. The second clue is chilling audio recorded on a cell phone that said "Down the hill."

To hear a recorded loop of the audio of the suspect, CLICK HERE.

Police created a sketch of the killer with the help of someone in Delphi they say saw the man face to face. Now they're looking for someone else they think can identify him. 

Indiana State Police Superintendent Douglas Carter said, "I believe I could ID a family member based on the way they're standing, the way his hands are in his pockets, the untucked shirt, the gait. That's who we're looking for."

But after 26,000 tips and counting the two families are still grieving and searching. 

Back at home the families show Dr. Phil's cameras how the girls left their rooms.

"This room will stay this way for as long as we're here probably," said Libby's grandmother Becky Patty. " Because this is Libby's room, and it always will be." 

It's the same at Abby's home.  

Anna Williams said, "her bedroom is right next to mine, and I think about the fact that she's not right behind that door. Seeing these pictures and telling our story again, it hurts just as bad as the day it happened."

Mike Patty revealed that, "every morning I wake up and walk down the hallway and see that picture of Libby, and I say, 'good morning,' and that gives me motivation to stay on task and go out and catch this guy." 

If you have any information, even if you feel it's insignificant, police urge you to call the tip line at 844-459-5786. 

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