James Swallow’s excellent Marc Dane series continues to excite and entertain with its fifth instalment, Rogue, which sees the tenacious ex-MI6 operative caught up in a plot which threatens the survival of the Rubicon Group and its founder, Solomon Ekko. When a figure from his past emerges from the shadows to cause havoc, Dane and partner Lucy Keyes set out to uncover who it is and where they came from, stirring up old secrets along the way. As the mystery unravels it reveals attacks on Rubicon from within and without, uncovering yet more secrets and bearing the unmistakable hallmarks of the Combine.