The Doctor and his great-grandson Alex are back travelling the universe together... but when that universe is in the grips of a Time War, the unexpected lurks round every corner... 5.1 Meanwhile, Elsewhere by Tim Foley (1 part). The Doctor and Alex arrive on a tropical beach where something's amiss. Meanwhile, elsewhere... a desperate pilot runs for his life. Meanwhile, elsewhere... it's Cass Fermazzi's first day on an errand-class starship. Meanwhile, elsewhere... it's the beginning of the end of everything 5.2 Vespertine by Lou Morgan (1 part). It's Cass's first trip in the TARDIS, and the Doctor is determined to make it one to remember. But when they arrive at a research base that shouldn't exist, built above a missing explorer's ship that should never have been found, it seems their visit's going to be memorable for all the wrong reasons. 5.3 Previously, Next Time by James Moran (2 parts). The Doctor, Cass and Alex land to find out what's causing temporal anomalies with the TARDIS, and come across an uninhabited planet, a mysterious factory, and a weapon so dangerous, it could destroy the Universe. But things go catastrophically wrong... CAST: Paul McGann (The Doctor), Emma Campbell-Jones (Cass Fermazzi), Sonny McGann (Alex Campbell), Nadia Albina (Oshia), Gareth Armstrong (Davon), Nicholas Boulton (Vice), Nicholas Briggs (The Daleks), Michael Chance (Vellan), Ian Conningham (Kade), Indigo Griffiths (Rin Martolo), Jaye Griffiths (Hieronyma Friend), Greig Johnson (Mex), Simon Shepherd (Hudson Sage), Homer Todiwala (Ebus). Other parts played by members of the cast.