INTO THE WOODS actor-turned-late night TV presenter James Corden was given a scare on Wednesday (01Apr15) when his guest, U.S. newswoman Katie Couric, pretended to fall down the studio stairs as she made her big entrance on THE LATE LATE SHOW WITH JAMES CORDEN. The Brit rushed to her side as she lay lifeless on the ground, only to discover she was a stuntdouble. The real Katie Couric appeared at the top of the stairs and revealed the prank was an April Fools' Day joke. As he recovered from the shock, he quipped, "I was like, 'Oh, my God. Katie Couric just died'."