Kansas City baby Lisa Irwin has been missing for nearly three months following her mysterious disappearance the night of Oct. 4. The one-year-old's parents, Deborah Bradley and Jeremy Irwin, continue to believe their daughter was kidnapped late that night.

Jeremy Irwin, an electrician, returned home to find his daughter missing on Oct. 4. He called 911 to report the disappearance of baby Lisa. A window and screen had been tampered with, lights were left on, the family's front door was unlocked and three cell phones were missing. Deborah Bradley claimed she last saw her daughter at 10:30 p.m. before falling asleep in bed with her two sons. It was later revealed that Bradley had actually put her daughter to sleep at 6:30 p.m. before drinking between five to ten glasses of wine.

Following a detailed investigation, authorities, however, still have no idea what happened the night baby Lisa Irwin went missing. While attention was initially focused on Lisa's parents, particularly on her mother Bradley, no suspects or major leads were ever found.

We have looked into the case of three other missing children whose disappearances stump authorities. What happened to Lisa Irwin, Bianca Jones, Ayla Reynolds and Aliayah Lunsford?

Related Article: Missing Baby Lisa Irwin Timeline: Are Police Giving Up After Two Months?

Related Article: Missing Baby Lisa Irwin: What Happened the Night She Disappeared?