There were two candles and, sadly, one flickered and died away.The remaininng candle lit as brightly as it could for as long as it could ,but,due to the darkness created by the candle that had faded,the remaining candle decided that it was time for it,too,to find another area to illuminate.As on Earth,Holmes' and Katherine's candles lit up there happy lives.So it will now be in Heaven..where there IS NO darkness and their "candles" are merely a sign of their Unity.