“The Dioskouroi in Existential Crisis,” deals with Nemean 10 and its extended mythical narrative. That myth is an aitiology of the entry of Kastor and Polydeukes into immortality, framed as a choice made by Polydeukes between claiming immortality for himself or sharing both mortality and immortality with his brother. I argue that Pindar’s epinician aitiology intervenes in and revalues enduring ambiguities surrounding the relationship of the Dioskouroi to mortality and immortality by valorizing Polyedeukes’ perspective, which privileges the parameters of mortal experience. This case study emphasizes the resonances evoked by the structure of the ode itself between the disorientation of the Dioskouroi from mortal experience and from the surrounding contexts of the ode.