It has always struck me as odd to have a police unit called The Serious Crime Squad. All crime is serious by definition. I know what they mean by 'Serious Crime: murder, rape, bank robbery, for example.

'Serious' is defined as:

1. Demanding or characterised by careful consideration or application.

2. Acting or speaking sincerely and in earnest, rather than in a joking or half-hearted manner.

You could apply that definition to investigating any crime. So, I have flipped it on its head - the opposite of serious is 'frivolous'. 'Frivolous' is defined as:

Not having any serious purpose or value.

I have invented crimes that the Serious Crime Squad would not touch:

1. Stealing collection money from a church.

2. Wheelie bin fire.

3. Theft of five pairs of very expensive knickers.

It follows therefore, that these crimes are frivolous; hence the name of the book!