The bidding proceeded innocuously for the first couple of rounds. That is until partner doubled and I decided to show my ♦ fit (never mind that it showed 7-10 total points).
The bidding now got really weird. What should I do over 3♠x? Surely I can't pass with this sad excuse of a hand. So I bid one more!
And there you have it, opps bid a slam and I have to find a lead. If you held the South hand, which suit would you lead? Diamonds, your singleton heart, or a spade?
Decide before you unveil the spoiler.
Spoiler