American Idol Katharine McPhee and Nick Cokas reportedly "working on their marriage" following cheating incident 03/11/2014 Katharine McPhee and husband Nick Cokas are "working on their marriage," sources tell Us Weekly. Read More RELATED NEWS 'American Idol' alum Mandisa's cause of death revealed'American Idol' alum Mandisa dead at age 47Katharine McPhee leaves David Foster tour after "horrible" family tragedy TAGS: American Idol Katharine McPhee Mary McCormack Michael Morris Smash Shark Night
