Movie #4 : page 2

Had partner cared only about a heart control, he would simply have raised to 5♠.  Had his focus been on trump quality, he would have cuebid hearts, then bid 5♠.  Therefore, he seems to have a hand with substantial all-around values, but no heart control.

This is good, but you must look at your own hand as well.  The heart king is a dubious value, and there is cause for concern in the spade suit.  If partner does not have something such as ♠AKxx, there could be an unanticipated trump loser.  Besides, the easiest way to lose a match against a weak team is to bid a failing slam.  So you opt for discretion and sign off in 5♠, ending the auction.

West leads the ♥A.  This is what you have to work with:

I believe that partner made a nice 5♥ call.  From his viewpoint, all you needed for a laydown slam was an ordinary 13-point hand such as:  ♠QJxxx ♥x ♦Kxx ♠AKxx. With that you would have bid it.  Wouldn't you?  In any case, it will be challenge enough just to take eleven tricks with your actual resources.

Failing to appreciate the potential advantage of a shift, west woodenly continues with a high heart.  East discards a diamond as you ruff, leaving you in charge.  It is reasonable to play off two top trumps, for if they split, the contract is home.  Not unexpectedly, however, west shows out on the second round of spades, leaving east with the master trump.

Plan the play.