If I were a disorganized person who has just killed Cheryl in a frenzy, be it rage, revenge, drug-induced rush, or by accident, and my awareness space is that neighborhood and the sun is coming up soon, I am going to think of all the places around. You see, I didn't plan this, so I don't have a tarp and a shovel or a wood chipper (or the stomach). park? too obvious, she will be found by someone's dog. Woods by the cemetery? Well that may be better...oh hey there is that tunnel under the road...perfect, I can pull right in beside what is essentially a hidden hidey hole overgrown with brush, and filled with rushing water! It will take 5 mins.