The Lady in the Lake

On page 115, a murder scene is vividly being described. The way the author describes the scene is very interesting. He gives examples of events that may or may not of happened. It is described in perfect detail, from the bathroom window to the rings that hold up the shower curtain. I found it strange that the blood had "been washed away" did the actual murderer do this? I don't understand the point of washing away the blood if the body is laying there with a bullet through his chest. The detective found a hankercheif with initials "A.F." on it, when the first dead body was found in the lake, she was wearing an initialed necklace as well. The hankercheif appears multiple times which leads me to believe it is a prevalent clue. What is strange is that the dead bodies are found in water, and both of them have been cleaned in some sort of way. This is ironic since water is generally seen as a cleansing force. When the body was found in the lake, her eyes were swollen shut. With the body found in the bathroom, his eyes are wide open. The author refers to the reader as "you" which helps me make more sense of the situation and put myself there.

the quote that stood out the most to me was:
"I felt my neck creak a little as i bent down. He was there allright- there wasnt anywhere else for him to be. He was huddled in the corner under two shining faucets, and water dripped slowly from his chest, from the chromium showerhead"