Jane thinks her transfer is on merit and is surprised to discover she is actually part of a short-term internal experiment, intended to have a calming influence on a team that likes to dub themselves as the ‘Dirty Dozen’.

The men on the squad don’t think a woman is up to the dangers they face when dealing with some of London’s most ruthless armed criminals, who think the only ‘good cop’ is a dead cop. Determined to prove she’s as good as the men, Jane discovers from a reliable witness that a gang is going to carry out a massive robbery involving millions of pounds.

But she doesn’t know who they are, or where and when they will strike . . .