Deep dark Monologue from a play!!! Help!!!!?

hiya!!!!! i really need a monologue and it has to be from a play so that i can present the script to the examiner. When i did a trial exam this didnt matter so i chose 'cold blooded murderer' i really enjoyed performing this and got a good grade so i would really like osmething similar, thats deep, dark and psychological. Either from an interrogation room, from death or someone who has been in a terrible accident, (i no it sounds morbid!) but i can rellly put emotion into those kinds of monologues! Any help appreciated! Thanks!!!!!!!!