Possible Clues:

• Quote back at end of record kept by captain in conventional order
• Order in which a brilliant clue delivers eventually
• Certain letter arrangement
• Initially arranged a wager with dodgy caliph outside
• Like characters in a script
• As a host is showing certain things in their natural order?
• Like the set of Across solutions in this puzzle
• Baghdad's initial caliphate developed a sort of order
• Refurbish chapel a bit in established Order
• Unreliable chap, albeit with character reference