Upon doing so , the Dalek begins to shake in terror and plead for mercy before River kills it .
Amy and Rory depart while River threatens the Dalek , telling it to look her up in its data records .
Upon doing so , the Dalek begins to shake in terror and plead for mercy before River kills Dalek .
Amy and Rory depart while River threatens the Dalek , telling it to look her up in its data records .