Although Madsen is happy for now staying at home with his son, other dads in the play group say they've considered what it might be like to start working again after their hiatus from the office.

NPR: Stay-At-Home Dads Grapple With Going Back To Work

He was in his bedroom at the Prairie Avenue mansion, home alone with his son and the hired help, when a hollow boom split the air.

NPR: Elevating the World's Oldest Profession in Chicago

"I am very positive that my son will be home with his family by the end of the year at the very latest, " she told the BBC.

BBC: Grant Cameron, Karl Williams and Suneet Jeerh