Verdigris is a BBC Books original novel written by Paul Magrs and based on the long-running British science fiction television series Doctor Who.

Orbiting above London is a mysterious ship, a duplicate of the St Pancras railway station.

The Doctor, with the aid of the adventurer, Iris Wildthyme, bargains to stop creatures determined to infiltrate in the guise of characters from nineteenth century novels.

Iris Wildthyme had earlier appeared in other Paul Magrs written Doctor Who stories, such as a short prose found in the first two volumes of BBC Books' Short Trips series and The Scarlet Empress.

The character would later be expanded into her own spin-off series of books and audio dramas.