Baby Lisa Irwin’s parents thought the 10-month-old infant was sleeping peacefully in her crib until her father walked into her room to check on her at 4 a.m. on October 3, 2011. The Kansas City, Missouri, family is still looking for her.

Lisa’s crib and her baby clothes are still in place in the bedroom from where she vanished more than five years earlier. Wrapped gifts marking every birthday and holiday fill the small room.

Parents Jeremy Irwin and Deborah Bradley believe their daughter is still alive, perhaps being raised by a family who bought her from a kidnapper. They look at her photo every evening and tell her “Good Night.”

Her mother is not certain when she last saw her baby. Bradley explained she put Lisa in her crib at 6:40 p.m. before spending most of the evening on her porch drinking wine with a neighbor. She told investigators she couldn’t remember if she checked the crib as she went to bed about four hours later.

Jeremy Irwin found the front door unlocked and lights on when he arrived home from work at 4 a.m. The family’s three cell phones were also missing, he said.

Despite an intense investigation and massive searches, detectives have few clues about what happened to Lisa. Nancy Grace and Alan Duke re-examine this cold case in this episode of “Crime Stories.”

[Feature Photo: National Center for Missing & Exploited Children]