Dane County authorities say a woman thought her boyfriend was having an affair. That’s why they think Dalton Ziegler was beaten to death Monday night. They say 20-year-old Mckayla Tracy asked Jacob Johnson and Drew Luber to come to her home and confront Ziegler. Investigators think the 21-year-old Luber held the victim while the 24-year-old Johnson beat him. Tracy, Luber and Johnson made a Dane County Circuit Court appearance last week.