Jill Sidebotham and her two-year-old daughter, Lydia, missing after leaving for a camping trip. The invitation to go camping came from Lydia's father, Nicholas Hansen, and Sidebotham's ex. Sidebotham and Hansen planned to return from their trip to Phillips, Maine, on June 30. When they didn't, Sidebotham's family members report her missing.

On July 2, Sidebotham, Hansen, and their daughter are seen on video at a Mexico, Maine, Walmart. No one has heard from them since--not even Sidebotham's 10-year-old son Brayden.   

TIPLINE: Sanford Police Department (207) 324-9170

Joining Nancy Grace Today:

• James Shelnutt - 27 years Atlanta Metro Area Major Case Detective, Former S.W.A.T. officer, Attorney (Gadsden, AL), The Shelnutt Law Firm, P.C., ShelnuttLawFirm.com, Twitter: @ShelnuttLawFirm, 
• Dr. Jeff Gardere - Board Certified Clinical Psychologist, Prof of Behavioral Medicine at Touro College of Osteopathic Medicine  www.drjeffgardere.com, Author: 'The Causes of Autism” @drjeffgardere 
• Greg Smith - Special Deputy Sheriff, Johnson County Sheriff's Office (Kansas),  Executive Director of the Kelsey Smith Foundation, www.kelseysarmy.com 
• Alexis Tereszcuk - CrimeOnline.com Investigative Reporter, Writer/Fact Checker, Lead Stories dot Com, Twitter: @swimmie2009