There is also chance of kidney failures of both of the Mr. and Mrs. Underhill. In the case stated, Mr. and Mrs. Underhill had a long day and they had to meet many clients. It might happen that they might not consume sufficient amount of water during the day which might create dehydration. So, it might happen that when they return from their work, they might feel thirsty and for that they might have consumed excess amount of wine. It can result to sudden kidney failure. Because of low blood pressure, the blood circulation might have been affected by that which results in kidney failure. Kidney needs proper blood circulation. If kidney fails to get proper amount of blood, there is huge chance of kidney failure. There are some medications which are toxic to kidney. These medicines include Furosemide. It has been stated above that Furosemide should not be consumed in dehydrated body but Mr. Underhill did the mistake. He consumed the Furosemide in empty stomach which should not be done and he consumed it in dehydrated body. Kidney function might also be affected due to low blood pressure which can lead to death. There might be some other reasons too like lack of proper diet as both, Mr. and Mrs. Underhill are busy person. They might not be able to have proper diet. It is another reason for kidney failure. Poorly controlled high blood pressure can be considered as another reason for the death of Mr. Underhill.