Yes, Jack. Captain Jack! We should get hold of him quickly, before the other does! He might lure him out... Or tell him to stay inside. He's very clever, River. He's very very clever. He has my mind. He was able to steal the TARDIS.
The only thing he doesn't have is my sonic. But a lot of good a screwdriver does me in a time like this... We need to get Jack to a safe place. And then work on getting Rory and the Master.