’Tis the season for self-awareness, it seems. In a year that has already endured its fair share of the play-within-a-play concept produced repeatedly upon local stages, along comes Will Eno’s “The Flu Season” at Catalyst Theater Company.

Eno’s conceit begins with an informal introduction to our evening’s two conflicting guides, Prologue (Alexander Strain) and Epilogue (Michael John Casey). Never mind that a man and woman (Dan Via and Ghillian Porter) have just met at the Crossroads Psychiatric Center, or that their misfit doctor (Jim Jorgensen) and nurse (Ellen Young) have an awkward romance budding in the background. The focus quickly shifts to the ongoing drafts of this exact scene, or that character’s dialogue, or the development of internal struggle as composed by the author.