Oops! That Worn't Work

Mary Maloney is a devoted wife and housekeeper. One day her husband, the police chief, announces that he wants a divorce because he has met another woman. Mary is quite angry and kills him with a blow from a frozen leg of lamb. She calls the police and provides am alibi for herself with the story that she'd been out to the store when the murder took place. The investigating officer, Lieutenant Noonan is further frustrated when he cannot find the murder weapon. Knowing of the long and hard hours spent looking into the case, Mary invites Noonan and the other investigators for a bite to eat. They dig into Mary's leg of lamb and Noonan, still thinking about the missing murder weapon, says, "For all we know, it might be right under our very noses."
— Plot summary of LAMB TO THE SLAUGHTER, Alfred Hitchcock TV, Season 3 Episode 28. Apl. 58, written by Ronald Dahl (story) Ronald Dahl (teleplay).

What then of Edgar Allan Poe's 1843 story of THE TELL-TELL HEART. The narrator is trying to convince us he is not mad, because he so cleverly treats the old man with such caring and delights. Although that blue eye with the film over it is still looking at him. He plans for a whole seven days. Going so stealthily at mid-night every night to the old man's room and looking in on him. Until finally the great plan comes together and as he quietly opens the door the blue eye looks a him. and after not moving for over an hour begins to hear the beating of the old man's heart.  That only adds to his fury,  he jumps on the old man, the old man screams. He pulls the man to the floor and kills him. The heart is silent.

Then he carefully cuts the corpse up and deposits it under the floor boards of the bedroom chamber. Can anyone who is mad clean up everything and it only took until 4 am. Just as he gets to his own bedroom, there is a loud knocking at the door, A neighbor had reported hearing a dreadful scream.
Three policemen come in. He explains he was the one who screamed waking from a nightmare. He tells then the old man has gone to the country. He takes them all over the house ending in the old man's bed chamber to show them all the old man's precious things are still there. He invites the police to sit and he puts his own chair right over the spot where the dismembered body is located. They sit and talk but after a time he begins to hear a ringing in his ears and then hears the heart beat. It gets louder and louder. he talks more animated and the police keep talking and act as if they don't heat the heart.

Finally he jumps up, rips up the boards and tells the police. "Here, here. I did it and here's the beating of his hideous heart."

Could we ever be as calm and collected  as Mary Maloney? To murder her husband with a leg of lamb then cook and serve it to the policemen who have been investigating?

Or are we as mad and strange as the man committing murder then when he has gotten away with it, slide into total and complete madness because he still hears the heartbeat of the man he killed?

Probably not. But we can write character's who are calm and collected and get totally away with murder. Or a character like the mad man in Poe's story.

However, in real life, just keep your imagination running when you're committing a murder on your laptop. And tell your muse to take a break your are going to cook dinner. You have everything assembled in the crock pot but the final step and notice you need a little more water. You turn the water on and nothing happens. How can that be? You were just using water about five minutes ago.

And your muse says, "How will you clean up all that blood from the kitchen floor if you don't have any water?" And there is quite a lot of blood when you shot your ex-husband who broke into your house, planning to do you bodily harm.

You look up the phone number in the local directory for City Hall to send a crew out to check out what is wrong, but you accidentally dial the police department because the print in the phone book is so small you had placed your finger on the wrong similar number.

"Oops, I dialed the wrong number, Lieutenant. I have a mess on my kitchen floor and suddenly I don't have any water."