Oops! You need to enable JavaScript in your browser to start watching. Guidance: . Disable parental controls Enable parental controls Professor T A Fish Called Walter Series 1 - Episode 2- When a blameless librarian is poisoned at a drinks reception at the museum, Professor T is called upon to help narrow down the list of possible suspects. 60 mins Share this episode: Copied to clipboard Share on Facebook Share on Twitter Copy link to share