Two of Conrad Murray's girlfriends are expected to testify.
Nicole Alvarez is considered the most crucial. According to TMZ, Murray lived with Alvarez in her Santa Monica apartment the entire time he treated MJ. The Propofol that Murray used on Jackson was delivered to her apartment.
Police believe Nicole Alvarez is withholding information to protect her child's father. The other witness is a Houston girlfriend who was on the phone with Murray when he realized Jackson was in deep distress.