What makes a marriage last? Iconic couple Marlo Thomas and Phil Donahue crisscrossed the country and conducted intimate conversations with 40 celebrated couples whose marriages they’ve admired. Through these conversations, Marlo and Phil also reveal the rich journey of their own 40-year marriage.

Marlo and Phil will share the practical and heartfelt wisdom from couples including like President Jimmy and Rosalynn Carter, Neil Patrick Harris and David Burtka, Al Roker and Deborah Roberts, and Sting and Trudie Styler.

Marlo Thomas is an award-winning actress and national outreach director for St. Jude Children’s Research Hospital, which was founded by her father Danny Thomas.

Phil Donahue is a media pioneer who revolutionized the talk show format and won 20 Daytime Emmy Awards.