The Prime Minister's days are numbered. The Master, a shadowy figure from his party's past, plans to replace him with someone he can manipulate to his own ends. But who will he choose? Two candidates stand out: David Petrie, a handsome, self-made Scot with a troubled personal history; and Caroline Phillips, a high-flying Londoner whose unconventional private life could make or break her. Against a backdrop of intrigue and betrayal at Westminster, these two must play the Master at his own game if they are to seize the greatest political prize of all.