Related Clues:
- Dim zero's about to go for seconds
- Starting to disembark from old boat without light
- Not in operation, as a Broadway theater
- Depressingly bleak
- 'Coming Out of the ___' (Gloria Estefan hit)
- From ___ till dawn
- Dawn's counterpart
- With 37-Across, fall of Rome aftermath, and a hint to the puzzle theme
- Like grim humor
- Died on boat? That's not fair
- Star, depressed when the day is done?
- Like yin but not yang
- Time of day to which the word crepuscular applies
- Evening Standard's first open when free
- Twilight start to drive by Welsh river