Deborah Bradley and Jeremy Irwin reported 10-month-old Lisa Irwin missing in October. Police have conducted several searches and chased hundreds of leads, but say they still don't have a suspect.
Late Thursday, police said detectives did not learn anything "significant" in speaking with the couple and their lawyer earlier in the day.
The parents say they believe someone entered their house and took Lisa while Bradley and two other children slept. They've also said police accused them of involvement in the disappearance, a claim they have repeatedly denied.
Irwin, Bradley and their lawyer are scheduled to appear Friday on "Dr. Phil." The show was taped earlier.