Michael's wife, Terry, is suffering from end stage cancer and is in terrible pain. Michael, Terry's sister Brenda, and the doctor discuss Terry's situation in the waiting room. Michael asks the doctor to turn up the intravenous drip of morphine to a lethal level. The doctor initially agrees; Brenda says nothing but nods. However, a few moments later the doctor changes his mind and tells Michael. Michael returns to Terry's room followed by Brenda and the doctor. Michael turns up the drip himself, as Brenda looks on. The doctor tries to restrain Michael and calls security. Terry dies as a result of the morphine overdose. In a Model Penal Code jurisdiction, what is the most serious crime of which the doctor can be convicted?