>> i asked, could your son have something to do with this? and he said, i don't believe so. >> so perhaps garret kopp acted alone after all. but detectives were convinced christopher had to be mixed up in that awful shooting somehow. someone must know, and they were right. someone did. miami homicide detectives larry belyeu and art had a problem. they were pretty sure the man who shot john and susan sutton was now a frequent visitor of the sutton home. >> here he gets arrested. >> and they at least suspected the sutton's own son, now john's caregiver, was all mixed up in it somehow. >> i was becoming more concerned. >> john sutton, a sitting duck for another attack? one that might finish him off? >> you must have found it a little worrisome that john sutton was actually living with his son christopher and being cared for by christopher.