It saw the same story style as Nation's The Keys of Marinus, with the TARDIS crew in different locations nearly every episode. A similar style would later be used in The Daleks' Master Plan and The Infinite Quest. The Chase also saw characters from other works of fiction making appearances, albeit as robotic duplicates in this story. Similar appearances would occur elsewhere in the programme's history. It also saw the program's take on the mystery of the Mary Celeste, a story that would be contradicted by other media.