Think you know the ins and outs of the "Doctor Who" universe? You should participate in a special one-night-only Geeks Who Drink trivia event, which is taking place in bars across the country Thursday night (just a few days before the series returns to television).

Many locations will have costume contests, special drinks and prizes created for hardcore fans; Austin’s fanbase is so big that two Opal Divine’s eateries are offering the quiz on a first-come, first-serve basis.

Details: 8 p.m. Thursday. $5. Opal Divine’s Penn Field and Marina, 3601 S. Congress Ave. and 12709 N. Mopac Expy. geekswhodrink.com/pages/themed-quizzes.