This is the first time Tim has got me stumped - usually I find Paul the trickiest. Stuck on 3 all interconnected 21 across Watches over engaging pet fox (2 words) ??ECK?RA? 22 down City in Central France not south ?E?ER? and 20 down Sink hole in place around rock face ??OLL?T - second letter of 21 ac starts 22 down and last letter of 21 ac is second letter of 20 down - can anyone help please?