Playing in a weak matchpoint field you are doubling your opponents at will. Hoping to find the round kings on your right, you take a piece out of 3♠. The sight of dummy makes you wince.
You track the ♦Q, K, Ace, 6.
Pard returns a low spade won be declarer with the Ace. Declarer plays a low heart won by the King (pard playing the 2 (udca)) and exits with a heart to pard's J and your Q.
Over to you.

Help

(pass) - 2D - (2S) - 3D
(pass) pass (3S) double
All pass