Stop in for a cup of coffee

Here's an interesting question/thought...

Now that I have had three blood transfusions... I have blood from three other people in me...

If I commit a crime and bleed on the scene, who will they go after???? One of the other three, me, or all 4 of us????

Do I have a window of opportunity here where I can kill somebody, bleed at the scene, and get away with it????

(I'm asking for a friend....) :D