the inspector is a Scottish one, Wally. It's also another name for a type of puzzle. The books are written by Ian Rankin, if that helps.
The answer in 6d is another word for mad - not the name of a painter - think Royal Academy [initials] and another word for attempt.
3d is a type of landing site - think top of tall buildings.
Hope that hasn't confused the issue too much
Thanks for your good wishes, Mrs T - I'm sure we'll have a good time weather notwithstanding..
Cheers
Chris