25-year-old Angela Drake was last seen in the early hours of December 9th, leaving a bar in Fitchburg.
Surveillance video shows she left with Michael Desalvo.
2 weeks later, her half-naked body was found in a culvert a few miles from Desalvo's apartment.
According to the criminal complaint, she was alive when she was left there, and died from hypothermia.
Dane county Assistant District Attorney Mike Verveer argued in court that Desalvo left Drake, knowing the elements would kill her.
"Any reasonable person would know that there was a certain probability that death could occur if a half naked very intoxicated individual is left outside alone on the ground in the fashion she was."
Investigators found Drake's DNA on Desalvo's mattress and her clothes in his vehicle.
After Thursday's court appearance, Angela's family said it's been hard to wait for charges to be filed.
"I wish it could have been faster but I'm glad that they were allowed the time to put together a proper case and to have it done right."
But Angela's mother Anne Olson adds the hard work that has gone into this case, shows how many people care about Angela.
"I think it says a lot about Angie, she made friends every where she went, but it says a lot about our community too, how they come together for all of us."
Desalvo is next scheduled to be in court in early May.
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