1. Closer to being a hush, say?
2. Stand or fall over a piece of wood
3. Claim changing sides is easy
4. Review articles, e.g.
5. Hobby that's maybe still developing
6. A cheeky upstart about to find opening
7. Come down south to head Panorama
8. Red light area a suitable place for developing
9. Wooden holder of a painting
10. 1995 novel by Jodi Picoult
11. What bring things into focus
12. Likeness to part trio might assume
13. Concentrate on a task
14. Essential material contained in 'Mein Kampf'
15. Olympus rival
16. Pretty thin entertainment
17. Image dot
18. Ostentatious moment
19. Charlie with unidentified priest
20. It takes shots without firing