Episode #2.6 - S2-E6
Character mistake: DI Richard Poole does not correct Officer Fidel Best properly; he says that the case he has in mind is "Makin v Attorney General for New South Wales, 1894", but it's actually 1893. (00:07:10)
Episode #2.3 - S2-E3
Character mistake: Richard makes it sound really special and important that the tea in the box is Camelia Sinensis...but that tells absolutely nothing, since it's simply the name of the tea plant, not a specific, precious variety of it. Your standard tea you buy at the supermarket is just as Camelia Sinensis as any other type of tea. (00:08:40)
Episode #2.2 - S2-E2
Character mistake: The prescription pills are labeled "Sister Therese", but Therese is not a nun yet (in the credits of the episode itself she is the one not labeled as such, but just by her name). (00:44:50)
Episode #2.2 - S2-E2
Character mistake: Throughout the episode, multiple times members of the clergy themselves talk about Therese not having yet received "holy orders." She would never have, considering that nuns only take "vows", the former are just for men.
Episode #2.1 - S2-E1
Character mistake: The clinic who ran the tests for Roger Seymour's brain tumor surely does not employ just brain surgeons, because the spelling in the official report is simply atrocious ("apetite" (twice), "consistant"). (00:21:00)
Episode #2.2 - S2-E2
Character mistake: Dwayne takes only the thumbprint of Sister Marguerite before she leaves. (00:12:50)
Answer: Most likely they had only tropical exotic drinks, he wanted an old fashioned English beer.