The 39th episode of the science fiction comedy Red Dwarf airs on BBC 2. This episode introduces new series regular Chloe Annett as an alternate-universe Kochanski who becomes stuck with the Red Dwarf crew, a character addition that proved controversial with fandom after the exit of Chris Barrie. 
Cat spots something which may be either a wiggly thing or a swirly thing, but is actually an unstable interdimensional rift not unlike a swirly thing, and in engineering a linkway opens up to another dimension (rather like a wiggly thing). Lister, Cat and Kryten meet their counterparts from another dimension, a dimension in which things happened a little differently – Kristine Kochanski, not Lister, was put in stasis and revived three million years later; and Lister, not Rimmer, was revived as a hologram to keep her sane. But a ship full of angry GELFs (quite ugly things) attacks, leaving Kochanski marooned in an unfamiliar universe with a familiar but unsavory crew, one of whom also happens to be the salvation of humanity.
written by Doug Naylor
directed by Ed Bye
music by Howard GoodallCast: Craig Charles (Lister), Danny John-Jules (Cat), Robert Llewellyn (Kryten), Chloe Annett (Kochanski), Gary Bleasdale (Frank), Juliet Griffiths (Barmaid), Adrienne Posta (Flight Announcer), Alexander John-Jules (baby Lister)
LogBook entry by Earl Green