captured on video at a bank of america. no one knows where caylee is. >> reporter: meanwhile, cindy anthony, caylee's grandmother, was trying desperately to see the little girl. a prosecution says that casey avoided her, putting her off with an escalating series of lies about a fictitious job, made-up locations and a nanny that never existed. >> cindy anthony, pressing her daughter, wants to know where caylee anthony is. >> caylee, the prosecution says, was already dead. >> you will learn that three pieces of overlapping duct tape covered the nose and mouth of caylee anthony. >> the prosecution then spells out the motive. >> caylee's death allowed casey anthony to live the good life. at least for those 31 days. >> everyone wants to know what happened.