Oscar Blaketon finds Dieter Dressler walking on the moors after he had had an accident and gets him to a hospital. It turns out that Dressler was forced off the road by another car. Furthermore a valuable painting has been stolen from his cottage. As if that was not enough Lord Ashfordly's Land Rover has been stolen and he is down on Sergeant Miller to get it back. When Aunt Peggy learns that the ornithologist Alan Phelps wants to see a golden eagle she promises to show him one even though there have been no golden eagles in the area for years. But trifles like that have never stopped her before.