The nanobots have not only re-created Red Dwarf they have also populated the ship with it's old crew, which is extremely good news for Rimmer. It's bad news for Lister, as he is back to sharing a room with him. It's also bad news for Cat and Kryten - they were not part of the original ship's complement and are now under investigation. Cat is confusing doctors with his syncopated pulse. Kryten is bemusing a psychiatrist with his incorrigible honesty. This episode also sees the return of Mac McDonald as Captain Hollister, together with crew members Selby (Paul Bradley) and Chen (David Gillespie).