American Idol Katharine McPhee and 'Scorpion' co-star Elyes Gabel break-up and split 07/26/2016 Katharine McPhee and her "Scorpion" co-star Elyes Gabel have called it quits. Read More RELATED NEWS Katharine McPhee leaves David Foster tour after "horrible" family tragedy'American Idol' alum Kellie Pickler's husband Kyle Jacobs dead from apparent suicideKatharine McPhee gives birth to first child with David Foster TAGS: American Idol Katharine McPhee Elyes Gabel Smash Entertainment Tonight Scorpion Hysteria Hysteria