Along the Wisconsin shoreline of Lake Michigan sits a rocky, wooded area called Warnimont Park. Det. Jo Donner : It's not somewhere that you find a lot of people. On April 2, 2024, a young man, out for a walk with a friend, made a gruesome find.  OFFICER 1 (bodycam): As they were walking, that bla — see that leg right there? (officer points) OFFICER 2: Yeah. Lead Detective Jo Donner of the Milwaukee County Sheriff's Office says she knew she had a homicide, but nothing else. Anne-Marie Green :