### Clue: Back in March, courthouse, school and shop all closing (4)
### Answer: HELP 
 ### Explanation: Definition: Back
Final letters ('all closing') of 'Marc**H** courthous**E** schoo**L**' and 'sho**P**'. Strangely, the word 'all' makes more plausible the exclusion of 'and' from the final letters.