There are wounds that are just too deep, that's what the lie detector test said about the death ofCasey Anthony's granddaughter

George and Cindy Anthony took polygraph tests to prove their innocence in their granddaughter's murder as part of a new TV special. Casey Anthony's parents took the polygraph test to 'clear their name,' expert says. Casey's parents are featured in a new special on Thursday at 8 p.m. ET.

George and Cindy Anthony take the polygraph test in an effort to prove their innocence in their granddaughter Caylee Anthony's murder. Casey Anthony's father seen for 1st time after taking polygraph to prove his innocence in Caylee's murder. Casey Anthony was found guilty of killing Caylee in 2008.

George and Cindy Anthony agreed to take the polygraph test after Casey Anthony alleged that her father molested her and that he was responsible for Caylee Anthony's death. Casey Anthony's parents agreed to the lie detector test after she alleged that she had been molested by her father.