Looks at the role and operation of Ministerial advisers, from a few years back - I came to it after reading something that Tiernan wrote in response to BCA CEO Jennifer Westacott's recent speech about the public service. Its academic origins are apparent in the writing style, but it reads as pretty even-handed, drawing on interviews with a range of frequently anonymous advisers, public servants and others, and ends with some suggestions for filling the 'accountability gap' that she diagnoses.