What's Your Poison?

S1 E2: Aulus tries to win over the Brits by doing an early morning walkabout and arranging a banquet. Grasientus buys poison from Wolfbane with a view to killing Badvoc. Aulus is dismayed when Grasientus is exposed as a poisoner... but then Badvoc and Aulus are found to be up to the same tricks.