Possible Clues:

• Mysterious religious figure right to stop exploitation
• Obscure university hospital's third contribution to breast reconstruction
• Recondite, strong, offensive language put about
• Sailor's plan to circle opening of the deep
• Sailor's scheme to save time is hard to understand
• Difficult to understand cruel treatment imprisoning three leaders of strike
• Monstrously stab king, and profit? It's hard to fathom
• Hard to fathom corruption engulfing good man and king
• Obscure muscles displayed by acrobat's last trick
• Hard to fathom why corruption engulfed good man and king