Possible Clues:

• Possible sharp chance
• Sort of chap not expected to be in ? Murdoch book?
• Perhaps M is taken toothy to the end
• There's no purpose in being so toothy at last
• Unintended note
• Unintended stress to a learner I'd kept in
• Note, western's got a new lead
• As fortuitous as Coe's woman or Murdoch's man
• Unintentional mark on the music score
• Cacti lend a different look to a flat, perhaps