It started with a 911 call at 8:49 a.m. on Saturday, Dec. 17, 2011. Justin DiPietro told a Waterville dispatcher that his 20-month-old daughter, Ayla Reynolds, was missing.

She was last seen, he said, by his sister, Elisha DiPietro, when she checked on the toddler at 10 p.m. the night before. DiPietro said when he went in to get her that morning, her bed was empty.

Three years, 20 searches and thousands of tips later, investigators are no closer to finding out what happened to Ayla.

During that time, Ayla’s mother, Trista Reynolds and her family; DiPietro; the others in the house the night Ayla disappeared; local and state police; and countless others have been at the epicenter of what authorities say is the biggest and most expensive criminal case in the state’s history.

Reynolds continues to suffer with her grief, her desire for justice and coming to grips with how long that may take.

Sgt. Jeff Love, a state police detective, has led the investigation from the first day and is sure the truth will come to light.

And Justin DiPietro, a public target since almost the day his daughter was reported missing, is staying silent and out of the public eye.

These are their stories.