Get three candles, one each for you, him, and the mistress. With something sharp, scratch the names into each one, one per candle. Starting with his candle next to the mistress, light them on a Friday during the waxing moon and let them burn for an hour. Every day burn them for an hour and move the candle representing your husband away from the mistress and closer to you. By the full moon have his candle right next to yours. Using something of his that he has worn, tie them together and, on the full moon, burn them and the mistresses candle to the bottom. Toss her melted wax into a flowing stream or river. Keep the two candles' melted wax until your husband has come home, then bury it in your yard.