Requiem for an Assassin is a great example of an author trying to find a way out of a characterisation cul-de-sac that he has gotten himself into and only being partially successful in his attempt at doing so.
At the end of the previous John Rain thriller, titled The Last Assassin in the US, Eisler's half-American/half-Japanese assassin had finally put behind him the never-ending (and slightly tedious) saga of his affair with the Jazz pianist Midori and returned to the arms of his Israeli lover Delilah. With an affirmed friendship with ex-Marine sniper Dox in place and the death of a dangerous old adversary it appeared that Rain was finally changing his self-imposed isolated lifestyle for a more normal one with long term human relationships, even if he wasn't giving up the business of killing.
With Requiem for an Assassin however, it appears that Eisler somewhat regrets humanising Rain in this fashion. Although when we pick up his story he is still with Delilah, living in Paris, it is rapidly revealed that Rain is having difficulty dealing with his new lifestyle. When Dox is kidnapped by another face from his past, ex-CIA spook Hilger, in an effort to coerce Rain into undertaking some wet-work, it is the perfect excuse for the old, emotionless killing machine (the Ice Man as Rain refers to that side of himself) to resurface and get back into the action.
All of which feels like something of a cop out. Over the previous novels in this series Eisler has managed to slowly humanise John Rain in a way that has always felt real and logical. There's been no road to Damascus conversion; the man has always remained a killer, but in increments Eisler has allowed Rain to grow and form long term attachments. With Requiem for an Assassin however, it feels like Eisler regrets allowing this to happen and has sought a way to bring back the Rain of old; the one man killing machine of the earlier novels. The result is not only a somewhat contrived set-up but also a step back in terms of character development.
Admittedly by the book's denoument the pendulum has swung firmly back the other way for Rain, but this just makes Rain's initial reversion back to his old emotionless self feel all the more unrealistic. Its as if Eisler wants to have it both ways, with Rain as both a one man army and as part of a larger team of supporting characters. The result is both narrative and characterisation that feels disjointed and doesn't tie up with what has happened in previous books.
Despite this however, Requiem for an Assassin is still an enjoyable read. The details of Rain's tradecraft are fascinating as always, and the action is hard and uncompromising. The sudden jumps from first person narrative by Rain to third person story telling for the other characters is a little jarring, and Rain's inner monologue lays on a little too much self-indulgent introspection at times. On the whole however, the dialogue is suitably punchy and the supporting characters arrayed around Rain provide some welcome moments of light relief.
With a denoument that, whilst low key, is satisfying this latest installment will no doubt please established Rain fans. Its not the book to choose as an introduction to the series for many reasons, but its a solid enough chapter. It must be hoped however, that for Rain's next adventure Eisler has the confidence to move Rain and his world forward again and not be tempted to step back and try to recapture past glories.