If you are going to defend effectively, it is essential that your partnership has simple and clear agreements about your leading methods. There is not much difference in honour leads between overlead all and all except AK. It is, however, most important to get your leads of spot cards well organised. At the most basic level, this is not a matter of 4th best or 3rd and 5th best. Nor is it a matter of MUD or top of nothing. So what is it? The most important thing is that a small card suggests partner lead the suit back and a high spot suggests they do not. This is true on both the opening lead and deeper in defence. Once you have that basic principle, everything else just adds a little exactness to proceedings. It is quite reasonable to choose to lead 4th best from an honour to give a count on the suit but that comes secondarily to the “return my suit” suggestion. From groups of small cards, you must lead a high spot to deny holding an honour. Top of nothing is playable but I prefer 2nd top or MUD, as it is sometimes called. With MUD you can lead the second top spot card and follow with a higher one to show an odd number initially. Playing a lower one on the second round shows an even number. Leading small from long groups of small cards needs to be avoided as it suggests an honour is held and that partner should return the suit. In the hand shown, EW bid the spade game after the transfer response of 1H. This is a good contract that happens to be doomed as the cards lie. If the KH or AD is in the other hand the contract is easy. At ? the table, North led the 8H. Declarer played small and South won the KH and had to make the crucial decision. A heart return is not going to develop any tricks since partner led a high spot. Declarer must play trumps so the defence doesn’t need to. Similarly, if the defence has a club trick that will always be there. Thus, it is clear to switch to the QD and defeat the contract. At the table, South weakly returned another heart. As North had the AS, declarer could draw trumps and discard a diamond loser on the fourth club so the defence did not get their second diamond trick.