Piper returned for the show's 50th anniversary episode "The Day of the Doctor" (2013) as the interface of a sentient weapon of mass destruction known as 'the Moment'. The War Doctor (John Hurt) intends to end the raging Time War by using the Moment to destroy both the Daleks and the Time Lords. Using Rose's image, chosen for her future significance to the Doctor, the Moment attempts to persuade him to seek an alternative course of action by showing him how the decision will affect his future.