Possible Clues:

• Captivate: Var.
• In which Henry VII rallied his troops to make slaves
• When uncovered, unearthly changes are captivating
• Model learnt about hotel delight
• Hold spellbound in umpteenth rally
• Hartnell creation lacking line to captivate
• That's what spelling can do to you
• Hold captive, preparing halter to catch head in noose
• Put into bonds, on account of great interest?
• Fascinate - grip