Gannon

A long time ago, I watched a horror movie. I wanted to rewatch it, but I can't seen to remember the name though. I don't remember all of it, but I remember one scene that they entered a room; some guy was sitting in a chair very still. When they touched him, his head fell off with no blood and shutters started opening, revealing his blood smeared on the wall in writing. I also remember a scene that one of them turned a valve in a tunnel; when he turned it, an arrow shot him in the chest. If anyone has an idea as to the movies title that would be most appreciated. Thanks!

I had two dogs killed... in the same week. My two dogs, Miss Sophia and Duke, they liked to go into the woods a lot, well one day Duke returned, but Miss Sophia didn't. After awhile, a man shows up and says he found the dog dead, with a dent in her head. Someone had hit her with a baseball bat! And then... the day after, Duke went missing, the odd thing is that we had locked him in a cage. Well... we found him dead in the nieghbor pool. Someone hit him with a baseball bat and then they drowned him... WHO DOES THAT?! I MEAN SERIOUSLY! WHAT THE HECK!

Just need this answer for a survey I am doing. Something like Pawn Stars or Antique Roadshow.