Faced cards by Opponent
This story was posted by a local club. Bidding complete & dummy faces their cards but their LHO faces all their cards. Declarer played 2 rounds when someone noticed the error - all asleep it seems. Further more, the offender demands that she can pick the rest of her cards up - TD called.
Declarer is allowed to play all the offenders (penalty cards) but there is more - if offender's partner is on lead 51b - declarer can forbid or insist on a particular suit. If declarer uses this law, all the offender's cards may be picked up and play continue normally.
The TD at the time was not qualified but uses a little yellow book to find answers when he gets stuck!