Gaia DR2 has added new aspects to a century-old question: Is Albireo (beta Cygni) a physical or an optical double? The road to a firm resolution of this question is amusingly littered with a number of misleading clues, reminiscent of a good crime movie. But recently I bet two pizzas with a dear colleague that the question will definitely be answered within the next 2-3 years. My bet is that it will turn out to be a physical double. This, by the way, is the sentimental hope of thousands and thousands of lovers of this object which is often quoted as the "most beautiful double star in the whole 4 pi sky."