Possible Clues:

• PBS series
• My Way very lacking in volume, which is hard to explain
• Mediaeval trade associated with Macavity
• "Cozy" literary genre
• Christie product
• It's obscure how this can sound too wise to come to terms with
• Something that passes understanding
• Religious rite - something inexplicable
• It's a puzzle when first person's tyres exploded
• Unexplained phenomenon