The Avengers - Season 2 Episode 8 Death of a Great Dane Mrs Peel, We're Needed!
Overview: A man involved in a car crash is found to have fifty thousand pounds worth of diamonds in his stomach. Steed investigates the man's joke shop, Big Laugh, and then the offices of multi-millionaire Litoff. The burial of one of Litoff's Great Danes is not quite what it seems.