Euripides' Danae and Dictys are two of the most important and influential treatments of a popular tragic myth-cycle, which is unrepresented among extant plays. Moreover, they are early treatments of major Euripidean plot-patterns that anticipate and illuminate more familiar works in the corpus, both extant and fragmentary. This is the first full-scale study of the two plays, which sheds light on plot-patterns, key themes and aspects of Euripidean dramatic technique (e.g. his rhetoric, imagery, stagecraft), as well as matters of reception and transmission of both tragedies, by taking into account newly related evidence. The cautious recovery of the two lost plays based on the available evidence and the detailed commentary on their fragments seek to complement our knowledge of Euripidean drama by contributing to an overview and more comprehensive picture of the dramatist's technique, as the extant corpus represents only a small portion of his oeuvre.