Peg and Cat invite you to join them for a special hour of four all-new, back-to-back math mysteries that kick off with a spooky Friday-the-13th problem. Later in the week, guest star Sandra Oh returns as the voice of the President of the United States in a new episode.Watch on Monday, October 3, 2016 at 10:00am on WSKG TV.https://youtu.be/wg46Fzh1bws