The answers to these clues are all five letters long. The third letter from all of the clues, read from top to bottom, will answer the following:
"When the disheartened archeologist was asked what caused his depression he said..""His career was in ruins" 
-1. Internet search engine
-2. Prejudice companion
-3. Perry or Free follower
-4. sequence
-5. domain
-6. Shakespeare tamed one
-7. Jesus broke it
-8. exhausted
-9. truism
-10. use a divining rod
-11. pier
-12. Windows OS
-13. a quick bird?
-14. It's bedtime for him!
-15. danger
-16. have faith in
-17. nimble
-18. Jay Silverheels role
-19. cheapskate