daniel spitz, the chief medical examiner for macomb and st. clair counties in michigan, is on his way to the location. >> apparently there's quite a bit of blood at the scene. i'm not sure what kind of wounds we're dealing with, if any, at this point. >> medical investigator patty roland, who works with dr. spitz, responds as well. >> there is a female. i don't have the age. that was found by her children's nanny when she came for her scheduled visit. they found blood all over the place. >> the sheriff's department cordons off the potential crime scene. with so much blood, investigators can't rule out foul play. >> it looks like a suspicious death. we don't really know what happened. >> dr. spitz and his staff at the medical examiner's office are responsible for investigating all suspicious or unexplained deaths in macomb and st. clair counties, a collection of 66 suburban townships, cities and villages outside of detroit. >> we work with the police at the scene so that nothing is missed. and the police, while they do a good job at investigati

daniel spitz, the work never stops. >> took what kind of blood so far? >> three and one. >> christina heisler, one of dr. spitz's two assistants, prepares both of today's cases simultaneously. the first is jill moore, a 44-year-old mother who went to the hospital complaining of head pain after a recent dental clning and died in the e.r. >> keep in mind i did have my own hypothesis just based on that terminal event, a sudden cardiac arrest while in the hospital setting. there's a pretty short list of things that could cause that. i was thinking could this be some type of pulmonary embolism, some type of cardiac-related problem. i was keeping an open mind. >> she's probably got blood clots in her. her blood is starting to coagulate. i'm trying to manipulate the arteries to the blood clots will loosen up and i will be able to get some blood to send out to toxicology. 69 inches tall. 5'9". >> the other case is ryan sudowsky, a 19-year-old marine hopeful who hanged himself in the garage of his grandparents' house a few hours before jill's death. >> any apparen

daniel spitz is about to perform an autopsy on charles krueger jr., the man found naked with his head crashed through a wall. dr. spitz's two assistants, michelle waters and christina heisler, prepare the autopsy room and mr. krueger. these two morgue attendants are the first to admit they live for death. >> it's considered taboo, death in general in our society. it used to be that way up until recently but i find it interesting because it is the number one universal in life. 100% of the people die. 100% of the time. >> working in the morgue has taught me that tomorrow's no guarantee. i could walk out that door and get hit by a bus. i can take care of myself, exercise, still might die of a heart attack tomorrow. it's not my choice. >> also here this morning is the investigator who attended yesterday's death scene, renee. she shows dr. spitz the photograph she took of mr. krueger so he can visualize the scene and begin to formulate a hypothesis. >> these are the two steps he fell down. this is the bifold door and there's the wall. no blood, not on his underwear. a little bit but not dr