They're your friends, colleagues or loved ones but you haven't seen them for a while and suspect something has happened - but how will you find them? You can't just get in a boat and head out to sea - it's vast and no place for a novice, plus you may endanger yourself and those trying to help you. Instead, you'll have to follow the clues left for you - but before you go anywhere or do anything wouldn't it be wise to see how a little bit of research may help?

There are games to be played, riddles to be solved and clues to search for. It's a day that will test your knowledge as well as the love you have for these people, and never forget that these things rarely happen without a whole series of events beforehand. Beware.

Then again, the castaways may be having such a great time they may not want you to find them? We suppose that's up to them.