 When it became clear that Dick York (I) (qv) could not continue  with the series, William Asher (qv) considered canceling it, not  only because of Yorks departure, but because he and  Elizabeth Montgomery (I) (qv) wanted to move on. However, the  ratings were still high enough that the network wanted the show to  go on. Dick Sargent (qv) was brought in to replace York, but there  was still one problem: how to explain why Darrin looked and sounded  different. Many people working on the show came up with ideas, but  Asher thought the viewers understood this was an actor playing a  role, so he decided that the best explanation was no explanation.