It is a 32-year-old story about never giving up hope when the unimaginable happens. An 11-year-old goes outside, walks not even a block, and disappears forever. 

June 28, 1987, Jennifer Lee Martin left her home barefoot and walked to a 7-11. She was never seen again. 

"Not knowing where she is at or if she is alright," Wes Martin said to our crew back in 1987, talking about the worst part of her daughter going missing.

"She wouldn't go off like this," said Betty Martin, her mother. "We know she wouldn't do that."

Today, though, Colleen Martin remembers a lot about her little sister.

"We would just bake and cook all weekend," said Colleen. 

She also remembers the day when Jennifer went away. 

"It's like the Earth opened up and swallowed her," she said. 

The Earth swallowed her. It makes sense. The Martin home is less than a block away from the 7-11 on Lemmon Drive, the last place where Martin was seen alive. 32 years later, a case like this goes cold. 

"It does," said Rachel Bixby. "Yes."

Bixby is a Northern Nevada mom of two. Solving cold cases is actually her hobby and her past.

"This is something I do on my free time," said Bixby. "It's become a passion of mine."

Bixby is using tools of 2019, like her Facebook and Instagram pages, Missing + Murdered in the Neon Babylon and Beyond, to seek new tips in old cases.

"So this is an opportunity to reach more people in a modern way," she said. 

However, Bixby is also doing it the traditional way too: flyers, posters on pizza boxes, and even using FBI algorithms to pinpoint a targeted area. 

Bixby said her latest campaign has turned up at least one tip, though she would not discuss the specifics. 

"This is the area she frequented the most," said Bixby, referring to the area near Lemmon Drive and Surge Street. "We're hoping the people who would have seen her during that time, might have some memory triggered by this."

Bixby's efforts are appreciated by Martin's family. 

"She's amazing," said Colleen, referring to Bixby.

However, the pain of 1987 is still fresh today. Colleen has a poster in her home of her little sister. It has become a daily ritual.

"Every morning, I get up, I go in there and I say 'good morning,'" she told us.

Colleen has also never changed her phone number.

"I still have the same phone number," she said. "I refuse to change my phone number because that's the phone number she knows."

You'll never hear Colleen use the past tense.

"Is. Is. Is. Is. She is out there."

Colleen is never giving up hope. One day, she believes, she will be able to give her baby sister a hug again.

"Even after all of these years, the pain doesn't go away," Colleen said. "Your heart hurts all of the time. Your heart is empty. You just wish, in my case, my sister can come and give me a big hug so my heart would stop hurting."