Nigel Jackson , 59 , arrested at property in Alvor , Portugal , in January . Body of wife Brenda Davidson , 72 , found in shallow grave in the garden . Jackson initially claimed she killed herself , but he has now changed story . Shown proof she was killed , he now says she must have died in burglary .
Nigel Jackson , 59 , arrested at property in Algarve , Portugal , in January . Body of wife Brenda Davidson , 72 , found in shallow grave in the garden . Jackson initially claimed she killed herself , but he has now changed story . Shown proof she was killed , he now says she must have died in burglary .