Liverpool Sound and Vision Rating 9/10

Cast: David Tennant, Jane Slavin, Joe Sims, John Banks, Pippa Bennett-Warner, Nicholas Briggs, Barnaby Edwards, Avita Jay, Kevin McNally, Leighton Pugh, Blake Ritson, Nina Toussaint-White.

It is often a surprise that for all the talk of family in Doctor Who, the thought of blood relations meeting the Doctor in different incarnations has never been truly explored.