Researchers of the historical grammar of Modern Greek agree in general terms that the particle θά derives from an older construction which included the verb θέλω. In the past years, however, there has been some disagreement about the exact point of departure, and, consequently, the exact route (or routes) of the development of θά. In this article we present a straightforward account of θά, explicating several of the disputed aspects of its development, and comparing our account to other, recently published, views. In this way we try to set the record straight with respect to the history of this important element of the Greek verbal system.