* * * the secret kept by the five occupants of the farm was two-fold , firstly the secret of the existence of the well below the kitchen secondly and more deeply that for some unusual reason every full moon the water in the well would rise , although sometimes not enough to notice the well was so deep you had to shine a powerful torch down it in order to see the water but at the midsummer and midwinter full moons the water would sometimes rise up close to the mouth of the well .