that becomes quite frustrating for us. madeleine's still missing. that person or those responsible for taking her are still at large, piers -- >> somebody somewhere knows what happened. that must eat you up far more than fireside critics saying -- >> it's not like a double punishment, you know, we have expressed our regret. it doesn't change it, you know. and what we're trying to -- day one is what we can do to find madeleine and those responsible. if we can go back and -- tapas, we would be there. >> -- i'd want to change what we did that night obviously, you know. >> do you have a lot of regret? looking back on it, do you think with hindsight, you should have done more to protect them? do you feel that? >> well, obviously, because of what's happened, you know.