Filming on the Doctor Who specials continues with even more intrigue being thrown into the mix by the production team. Spotted on set today, in a scene set in a contemporary bookstore, was Jessica Hynes.

The Spaced actress previously appeared in the Human Nature two~parter in 2007 as Joan Redfern. In this story John Smith revealed his parents names were Sydney and Verity - a reference to two of the creators of Doctor Who, Sydney Newman and Verity Lambert. Jessica's character's name appears to take elements from them too as her name is Verity Newman.

In a further nod to the Paul Cornell classic, Jessica's character is seen signing a book entitled A Journal Of Impossible Things - the cover of which features a fob watch. Directing these scenes was Euros Lyn, which would indicate that this is the two part finale that will see the end to David Tennant's time as the Time Lord due to start broadcasting later this year.