Alex Tanner, TV researcher and private investigator, is more than a little curious when she receives a parcel from someone calling herself 'Mrs X'. Inside the package are GBP200, a list of four famous feminists and a grisly surprise. All this plus the impassioned plea:

'I MUST SMASH THE GLASS CEILING. STOP ME IF YOU CAN . . . PLEASE STOP ME.'

But what sends the biggest chill down Alex's spine is the cross against one of the names on the list. For this woman is now dead . . .