The motel room drama is a genre all its own. Its structure generally involves a short stay in a strange, tight space where two or more friends, spouses or lovers have it out with one another, while anything from bad weather to existential threats keep them from fleeing. Examples range from Sam Shepard’s dynamic Fool for Love to A.R. Gurney’s contemplative The Wayside Motor Inn. In his 2018 one-act, Only Yesterday, television writer and first-time playwright Bob Stevens adds a couple of new elements to the form. His work is inspired by actual events, and the characters happen to be two of the most famous men in the world: John Lennon and Paul McCartney. Thus confined by reality and familiarity, the results are nostalgic, if not exactly explosive.