Possible Clues:

• Find out how sectarian may be converted
• Find out - make sure
• Assure, perhaps, how to find this out
• Cares ain't as sure as this, as you'll find out
• Ger 2, no?
• Find out by making enquiries in sectarian way
• Make sure a trace is disguised in offence
• Verify
• Discover sectarian's alter ego
• Prove sectarian to be mistaken