Britain is a nation obsessed with collections from priceless timepieces to obscure furniture, all the way to art, statues, and more. Most collections don't ever get fully finished though, with owners unable to claim a full set. This program follows Dan Hatfield and his team, who specialize in tracking down missing items and offering them to collectors, sometimes for a very high ticket price. But the chance to complete collections may leave people the owners of unbelievably lucrative sets of odd little items or precious old pieces. Who will go for it and complete their set? And if they do, what will it be worth as a finished collection?