Karen: I love the fact that Amy has this massive secret from him (the doctor) Matt: The Doctor's relationship to Amy is going to change forever..

Karen: I love the fact that Amy has this massive secret from him (the doctor) Matt: The Doctor's relationship to Amy is going to change forever..

Get an exclusive inside look at the making of the all-new season of DOCTOR WHO, featuring interviews with stars Matt Smith, Karen Gillan, Arthur Darvill and Alex Kingston on the set in America. Don’t miss the all-new season starting Saturday April 23rd at 9/8c only on BBC America.

For more visit: http://www.bbcamerica.com/doctorwho