What case have you been following?!
ALL they have done is protect their daughter! They have not lifted a finger or gotten off their @sses to find Caylee whatsoever!!
IMO...They have destroyed evidence, withheld or hidden evidence/information, lied, created diversions, taken in questionable funding, etc. in order to save Casey! How was any of this in any way to bring justice to Caylee?!
They may have loved Caylee, but in the same vein...they have not done one single thing right by her starting with "31 Days". Now, they are trying to cover their own @sses for the things they have said and done to thwart the investigation and/or to absolve themselves of charges in Caylee's murder.
No sad, feel sorry for the grandparents film changes the facts of what has transpired to date.