The Empire Strikes Back, chronologically, 5 letters
End of a pentamerous document, 5 letters
End of a pentamerous serial, 5 letters
Fifth episode of a miniseries, 5 letters
Fifth in a series of connected works, 5 letters
Fifth installment of a miniseries, 5 letters
Final episode of a Monday-Friday miniseries, 5 letters
Final installment, perhaps, 5 letters
Final section of T. S. Eliot's The Waste Land, 5 letters
Last episode in a Monday-Friday miniseries, 5 letters
Last of a Monday-to-Friday series, 5 letters
Weekday-long miniseries' Friday episode, 5 letters
What Friday the 13th: A New Beginning is, sequentially, 5 letters