And the plot thickens with new information..
Ex-Housemate: Former Model, Boyfriend Killed California Doctor Found in Car Trunk in Vegas
"A former Maxim and Playboy Italia model and her boyfriend murdered a 71-year-old California psychiatrist in Las Vegas, according to a former roommate whose cooperation with prosecutors could get her probation in the case.
Diana Nicole Pena pleaded guilty Tuesday to accessory to murder after the slaying, reduced from a murder charge."